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Mulyana, Mulyana, Vistarani Arini Tiwow, and Sulistiawaty Sulistiawaty. "ANALISIS SUSEPTIBILITAS MAGNETIK TANAH TPA ANTANG MAKASSAR BERDASARKAN KEDALAMAN." ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika 8, no. 2 (2022): 234. http://dx.doi.org/10.31764/orbita.v8i2.11252.
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ABSTRAKAnalisis suseptibilitas magnetik pada tanah di TPA Antang Makassar berdasarkan kedalaman telah dilakukan. Studi ini bertujuan untuk menganalisis jenis mineral magnetik, domain magnetik, dan sumber mineral magnetik. Suseptibilitas magnetik diukur menggunakan alat Bartington MS2 Magnetic Susceptibility Meter dengan sensor MS2B yang bekerja pada dua frekuensi. Pengukuran suseptibilitas magnetik dilakukan dengan mengambil sampel pada lima titik dengan variasi kedalaman hingga 0-80 cm dari permukaan tanah. Hasil pengukuran menunjukkan bahwa nilai suseptibilitas magnetik di TPA Antang bervariasi 2,097 m3/kg hingga 33,523 m3/kg dan suseptibilitas magnetik bergantung frekuensi pada rentangan 2,51% hingga 6,51%. Sampel tanah diindikasikan mengandung mineral magnetik yang bersifat antiferomagnetik dan paramagnetik. Domain magnetik pada sampel tanah adalah superparamagnetik (SP) dan stable single domain (SSD). Sumber mineral magnetik dominan berasal dari aktivitas manusia (antropogenik). Kata kunci: TPA; tanah; suseptibilitas magnetik; mineral magnetik; antropogenik. ABSTRACTMagnetic susceptibility analysis of soil at TPA Antang Makassar based on depth has been carried out. This study aims to analyze the types of magnetic minerals, magnetic domains, and sources of magnetic minerals. Magnetic susceptibility was measured using a Bartington MS2 Magnetic Susceptibility Meter with an MS2B sensor that works on two frequencies. Magnetic susceptibility measurements were carried out by taking samples at five points with depth variations up to 0-80 cm from the ground surface. Measurement results show that the magnetic susceptibility values in Antang landfill varied from 2.097 m3/kg to 33.523 m3/kg and the magnetic susceptibility was frequency dependent in the range of 2.51% to 6.51%. Soil samples are indicated to contain magnetic minerals that are antiferromagnetic and paramagnetic. The magnetic domains in the soil samples are superparamagnetic (SP) and stable single domain (SSD). The dominant source of magnetic minerals comes from human activities (anthropogenic). Keywords: landfill; soil; magnetic susceptibility; magnetic mineral; anthropogenic.
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Arifya, Eldiani, and Afdal Afdal. "Pemetaan Zona Potensi Emas Menggunakan Metode Geomagnet di Jorong Lubuak Sariak, Nagari Kajai, Pasaman Barat." Jurnal Fisika Unand 9, no. 4 (2021): 524–30. http://dx.doi.org/10.25077/jfu.9.4.524-530.2020.
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Penelitian untuk menentukan zona sebaran emas di Jorong Lubuak Sariak, Nagari Kajai, Kabupaten Pasaman Barat, Sumatra Barat telah dilakukan. Penelitian ini menggunakan metode magnetik pada daerah seluas 700 m2 dengan 70 titik. Hasil penelitian menunjukan emas berasosiasi dengan pirhotit dengan nilai suseptibilitas 0,00046-1,4 SI, pirit dengan suseptibilitas 0,000035-0,005 SI dan siderit dengan suseptibilitas magnetik 0,0013 – 0,011 SI yang merupakan mineral sulfida magnetik yang terdapat dalam batuan metamorf dan sedimen. Selain itu mineral emas juga beasosiasi dengan batuan beku intrusi yaitu porfiri dengan nilai suseptibilitasnya 0,00025-0,21 SI. Di lokasi penelitian diduga emas berasosiasi dengan mineral pembawa emas terletak pada kedalaman 0 m sampai dengan 84 meter di bawah permukaan. The reasearch about mapping of gold potential zones in Jorong Lubuak Sariak, Nagari Kajai, Pasaman Barat has been conducted. This reasearch used magnetic method in area 700 m2 with 70 points. Results show that golds are associated with pyrrhotites with magnetic susceptibility value 0.00046 – 1.4 SI, pyrite with magnetic susceptibility value of 0.000035 – 0.005 SI, siderite with magnetic susceptibility of 0.0013 – 0.011 SI which is a magnetic sulfide mineral found inmetamorphic and sedimentary rocks. Gold minerals are also associated with igneous rock (intrusion) that is porphyry with magnetic susceptibility value of 0.00025 – 0.21 SI. Gold carrier minerals located at 0 – 84 m depth
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-, Palkrisman, and Arif Budiman. "PEMETAAN PERSENTASE KANDUNGAN DAN NILAI SUSEPTIBILITAS MINERAL MAGNETIK PASIR BESI PANTAI SUNUR KABUPATEN PADANG PARIAMAN SUMATERA BARAT." Jurnal Fisika Unand 3, no. 4 (2024): 242–48. https://doi.org/10.25077/jfu.3.4.242-248.2014.
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ABSTRAKTelah dilakukan penelitian tentang pemetaan persentase kandungan dan nilai suseptibilitas mineral magnetik pasir besi Pantai Sunur Kabupaten Padang  Pariaman menggunakan metode Anisotropy of Magnetic Susceptibility (AMS). Hasil perhitungan persentase kandungan mineral magnetik dari 55 sampel menunjukkan rentang nilai 6,5% hingga 61,3%. Hasil perhitungan suseptibilitas mineral magnetik dari 55 sampel menunjukkan rentang nilai 333,65 × 10-8 m3/kg hingga 2883,67 × 10-8 m3/kg, berdasarkan nilai ini dapat diperkirakan bahwa mineral utama penyusun pasir besi Pantai Sunur adalah hematit dan ilmenit. Pemetaan dilakukan dengan menggunakan software surfer 9.0 pada 5 lintasan yang sejajar garis pantai. Lintasan pertama berada di tepi laut, dan lintasan berikutnya menjauhi laut dengan jarak antar lintasan 25 m. Hasil pemetaan persentase kandungan mineral magnetik menunjukkan bahwa Lintasan 3 (tengah lintasan) yang berjarak 50 meter dari lintasan pertama (tepi laut) mempunyai nilai kandungan persentase mineral magnetik terbesar. Hasil pemetaan nilai suseptibilitas mineral magnetik menunjukkan bahwa Lintasan 5 yang berjarak 100 meter dari lintasan pertama mempunyai nilai suseptibilitas terbesar.Kata Kunci : pasir besi, anisotropi, magnetik, dan suseptibilitas.AbstractThe mapping of content percentage and magnetic susceptibility of iron sand from Sunur beach, Padang Pariaman, using Anisotropy of Magnetic Susceptibility (AMS) methods has been conducted. Based on the calculation, the content percentage of the magnetic mineral of iron sand of 55 samples are from 6.5% to 61.3%. The value of magnetic susceptibility of 55 samples are from 333.65 × 10-8 m3/kg to 2883.67 × 10-8 m3/kg. From the value, it can be estimated that the main magnetic minerals of iron sand Sunur beach are hematite and ilmenite. The mapping is done by using Surfer 9.0 software at 5 tracks parallel to the shoreline. The first track is near the sea, and the next track is 25 m away from the first track to the land side. It shows that track 3 (middle path) within 50 meters from the first track (waterfront) has the largest percentage of magnetic mineral. The magnetic susceptibility mapping shows that track 5 within 100 meters from the first track has the greatest value of susceptibility.Keywords : iron sand, anisotropy, magnetic, and susceptibility.
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Tiwow, Vistarani Arini, Meytij Jeanne Rampe, Sulistiawaty Sulistiawaty, and Pariabti Palloan. "HUBUNGAN SUSEPTIBILITAS MAGNETIK DAN LOGAM BERAT PASIR BESI PANTAI SAMPULUNGAN, TAKALAR, SULAWESI SELATAN." ORBITA: Jurnal Pendidikan dan Ilmu Fisika 9, no. 2 (2023): 254. http://dx.doi.org/10.31764/orbita.v9i2.17326.
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ABSTRAKPantai Sampulungan merupakan salah satu pantai di Kabupaten Takalar, Sulawesi Selatan sebagai kawasan wisata. Aktivitas pengunjung di pantai ini dapat mempengaruhi kualitas pasir besi. Dengan demikian, perlu dilakukan investigasi sifat magnetik pasir besi dan hubungannya dengan logam berat. Studi ini bertujuan menganalisis sumber mineral magnetik serta hubungan suseptibilitas magnetik dan logam berat pasir besi Pantai Sampulungan. Pengukuran parameter magnetik seperti suseptibilitas magnetik menggunakan alat Bartington Susceptibility Meter dilengkapi sensor MS2B. Metode XRF digunakan untuk identifikasi logam berat. Hasil menunjukkan bahwa mineral yang terkandung pada pasir besi bersifat ferimagnetik. Sumber mineral magnetik pada pasir besi dominan berasal dari proses pelapukan batuan secara alami atau litogenik. Hubungan suseptibilitas magnetik dan logam berat memiliki korelasi positif kuat. Kata kunci: suseptibilitas magnetik; logam berat; korelasi positif; litogenik; pantai sampulungan. ABSTRACTSampulungan Beach is one of the beaches in Takalar Regency, South Sulawesi, as a tourist area. Visitor activities on this beach can affect the quality of the iron sand. Thus, it is necessary to investigate the magnetic properties of iron sand and its relationship with heavy metals. This study aims to analyze the magnetic mineral resources and the relationship between magnetic susceptibility and the heavy metal iron sand of Sampulungan Beach. Measurement of magnetic parameters such as magnetic susceptibility uses a Bartington Susceptibility Meter equipped with an MS2B sensor. The XRF method is used to identify heavy metals. The results show that the minerals contained in the iron sand are ferrimagnetic. Iron sand's dominant magnetic mineral source comes from natural or lithogenic rock weathering processes. The relationship between magnetic susceptibility and heavy metals has a strong positive correlation. Keywords: magnetic susceptibility; heavy metal; positive correlation; lithogenic; sampulungan beach.
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Boroallo, Anastacya, Vistarani Arini Tiwow, and Sulistiawaty Sulistiawaty. "STUDI MINERAL MAGNETIK TANAH TPA ANTANG MAKASSAR BERDASARKAN DATA SUSEPTIBILITAS MAGNETIK." ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika 9, no. 1 (2023): 16. http://dx.doi.org/10.31764/orbita.v9i1.11663.
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ABSTRAKTelah dilakukan penelitian untuk mengetahui nilai suseptibilitas magnetik pada tanah di TPA Antang Makassar berdasarkan sebaran. Suseptibilitas magnetik diukur menggunakanbartington MS2 Magnetic susceptibility meter dengan sensor MS2B yang bekerja pada dua frekuensi. Pengukuran suseptibilitas magnetik dilakukan dengan mengambil sampel pada 30 titik dengan jarak yang tidak ditentukan atau secara random. Hasil penelitian menunjukkan bahwa nilai suseptibilitas magnetik di TPA Antang Makassar bervariasi dengan rentang 1,442 m3/kg hingga 33,523 m3/kg dan suseptibilitas magnetik bergantung frekuensi berada pada rentangan 2,32% hingga 6,51% rentangan nilai suseptibilitas magnetik tersebut mengindikasikan sampel mengandung mineral magnetik yang bersifat antiferomagnetik dan paramagnetik. Dimana domain magnetik pada sampel tanah TPA yaitu superparamagnetik (SP) dan stable single domain (SSD). Kata kunci: tanah; suseptibilitas magnetik; mineral magnetik;TPA. ABSTRACTResearch has been carried out to determine the value of magnetic susceptibility on soil at TPA Antang Makassar based on distribution. Magnetic susceptibility was measured using a bartington MS2 Magnetic susceptibility meter with an MS2B sensor that works on two frequencies. Magnetic susceptibility measurements were carried out by taking samples at 30 points with an undetermined distance or randomly. The results showed that the magnetic susceptibility values in Antang TPA Makassar varied with the range of 1.442m3/kg to 33.523 m3/kg and the frequency-dependent magnetic susceptibility was in the range of 2.32% to 6.51%. The range of magnetic susceptibility values indicated that the sample contained magnetic minerals. which are antiferromagnetic and paramagnetic.The magnetic domains in the soil samples are superparamagnetic (SP) and stable single domain (SSD). Keywords: soil; magnetic susceptibility; magnetic minerals; landfill
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Didik, Lalu A., Isniwana Damayanti, Jumliati Jumliati, and Putri Dinda Alfadia Lestari. "Morphological Characteristics and Mineral Content Analysis of Magnetic Minerals Based on River and Coastal Sand using SEM-EDX." Jurnal Sains Dasar 10, no. 2 (2021): 44–50. http://dx.doi.org/10.21831/jsd.v10i2.42217.
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This study aims to analyze the mineral content and morphological characteristics of magnetic minerals based on coastal and river sand. Analysis of minerals content uses Atomic Absorption Spectroscopy (AAS) to determine the content of Fe and Energy Dispersive X-Ray (EDX) to determine the elements of magnetic minerals based on coastal and river sand. While the morphological characteristics were analyzed using Scanning Electron Microscope (SEM). Based on the AAS analysis, magnetic mineral based on coastal sand has higher Fe content (9.03 mg/gram) compared to magnetic mineral based on river sand (8.03 mg/gram). This is also confirmed by EDX analysis where the Fe content of magnetic mineral based on coastal sand is 2.07 ± 0.21%. This value is greater than the Fe content of magnetic mineral based on river sand which cannot be measured by EDX. Morphological analysis using SEM shows that magnetic mineral based on coastal sand has a relatively uniform particle size compared to magnetic mineral based on river sand. The particle size of magnetic minerals based on coastal sand also smaller than magnetic minerals based on river sand. Coastal sand also has finer size compared to river sand. This is because coastal sand sediments are formed due to the energy of sea waves so that they have a smoother structure. While river sand sediments come from limestone deposits that have a fine and coarse structure.
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Tamuntuan, Gerald, Seni H. J. Tongkukut, and Guntur Pasau. "Analisis Suseptibilitas Dan Histeresis Magnetik Pada Endapan Pasir Besi Di Sulawesi Utara." Jurnal MIPA 6, no. 2 (2017): 105. http://dx.doi.org/10.35799/jm.6.2.2017.18008.
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Telah dilakukan pengukuran suseptibilitas dan hysteresis magnetic untuk mengetahui karakteristik magnetic endapan pasir besi pada beberapa lokasi di Sulawesi Utara. Lokasi pengambilan sampel dalam penelitian ini adalah tiga lokasi di pesisir timur semenanjung utara Pulau Sulawesi yaitu daerah Belang, Hais, dan Minanga, serta tiga lokasi di wilayah pesisir barat yaitu daerah Lalow, Inobonto, dan Lolan. Hasil yang diperoleh menunjukkan bahwa nilai suseptibilitas magnetic pada sampel-sampel pasir yang diukur bervariasi dari 7,73 × 10-8 m3kg-1 hingga 436,38 × 10-8 m3kg-1. Pengukuran suseptibilitas magnetik pada empat distribusi ukuran bulir pasir yang berbeda menunjukkan bahwa nilai rata-rata tertinggi suseptibiltas adalah pada pasir berukuran halus (fine grains). Secara umum, pasir besi pada daerah pantai timur semenanjung utara Pulau Sulawesi memiliki nilai suseptibilitas magnetik yang lebih tinggi dibandingkan dengan daerah pantai barat. Konsentrasi mineral superparamagnetik tertinggi berada pada daerah Belang. Mineral magnetik yang dominan dari sampel-sampel pasir besi yang diteliti adalah magnetit dengan domain statepseudo-single domain.Magnetic susceptibility and hysteresis parameters of iron sand deposits at several locations in North Sulawesi have been measuredin order to determine their magnetic characteristics. Samples were taken from six locations which is three locations on the east coast of the northern arm of Sulawesi Island (Belang, Hais and Minanga) and three othersfrom the western coastal areas (Lalow, Inobonto and Lolan).The result shows that magnetic susceptibility of the sand samples vary from 7,73 × 10-8 m3kg-1to 436,38 × 10-8 m3kg-1.Measurement of magnetic susceptibility in four different grain size distributions shows that fine grainsand have the highest susceptibility value.In general, magnetic susceptibility valueof Iron sand samplesfrom the east coast of the northarm of Sulawesi Island was higher than the west coast. Concentration of superparamagnetic mineral from Belang area was higher than other locations. The predominant magnetic minerals of the iron sand samples are magnetite with the domain state pseudo-single domain.
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Hutabarat, Imelda, Maryono, Rudiyansah, Dikri Fajar Ramadan, and Koko Wigyantoro. "Indonesian Tungsten Mineralogy and Processing Concept." E3S Web of Conferences 543 (2024): 01005. http://dx.doi.org/10.1051/e3sconf/202454301005.
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Tungsten minerals which are major as Wolframite and Scheelite mineral are by-product minerals of Tin mineral known as Cassiterite. Tin minerals are mostly found in Bangka Island which is one of the islands in the Southeast Asian tin belt that makes Indonesia the largest Tin (Sn) producer in the world. This research aims to characterize the mineralogy of Tungsten and associated minerals for potential mineral processing to gain the Tungsten concentrates. The Tungsten minerals were collected from the eastern edge of Klabat Granite in Toboali District, South Bangka. The Tungsten minerals were magnetically separated up to 14000 Gauss. The magnetic and non-magnetic fractions were identified to analyze the associated mineral of Tungsten with SEM analysis. The associated minerals in the Tungsten mineralization system in Toboali were found along with Silicates, Oxides, Sulphides, and Carbonates where Silicates dominated up to 91.8% of the non-magnetic minerals while Wolframite presence up to 0.9% in the non-magnetic fraction. At magnetic fraction found that Silicates dominates also up to 84.6% while Wolframite existed at 1.1%. The results of element deportment in the non-magnetic fraction show that Tungsten is associated with iron minerals and also in liberated form. The potential Tungsten mineral is Wolframite (Fe,Mn) WO4 in the magnetic and non-magnetic fraction. Mineral locking at P100 size 18.8 μ. shows that 84.4% Wolframite was locking with 3 (three) other minerals, 10.4% locking with 2 (two) other minerals, and only 4.8% Wolframite was 100% free in the magnetic fraction while in non-magnetic fraction P100 size 31.5 μ 77.5% Wolframite was locking with 3 (three) other minerals 18.3% locking with 2 (two) other minerals and only 4.2% Wolframite was 100% free. The processing concept is to liberate Tungsten from the associated minerals either with comminution or a combination of roasting alkali and leaching process and concentrate it up to marketable Tungsten concentrates.
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Khuzaima, Nur, Khairel Rafezi, Nur Hidayah Ahmad Zaidi, M. K. R. Hashim, and Sheikh Abdul Rezan. "Minerals Characterization of Magnetic and Non-Magnetic Element from Black Sand Langkawi." Solid State Phenomena 280 (August 2018): 440–47. http://dx.doi.org/10.4028/www.scientific.net/ssp.280.440.
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Valuable minerals are defined as mineral which having good opportunities to economic and consireable important. The most commonly occurring sand mineral deposits are ilmenite, rutile, magnetite, cassiterite, monazite, tourmaline, zircon, kyanite, silimanite, and garnet. In Malaysia, mineral sand deposits is found in Langkawi which known as black sand Langkawi. Langkawi black sand having high amount of valuable minerals that is very crucial in the industrial and construction products. Characterizations of black sand acquire different techniques to concentrate and separate valuable minerals. These techniques utilize different in physical or chemical properties of the valuable and gangue (wastes) minerals. For magnetic is based on natural or induced differences in magnetic susceptibility or conductivity of the minerals.. They are used to distinguish and extract magnetic, slightly magnetic and non-magnetic components present in the heavy fraction (Rutile, Ilmenite, Magnetite, Garnets, Zircon and Monazite). All minerals will have one of three magnetic properties: ferromagnetic, paramagnetic and diamagnetic. Ferromagnetic minerals (i.e. Magnetite and Ilmenite) are magnetic and easily attracted to the poles of magnet. Paramagnetic and diamagnetic minerals in the group magnetic, but if the mixture of paramagnetic and diamagnetic minerals are passed through a magnetic field, the paramagnetic minerals will be pulled into the field and diamagnetic minerals separated from the field. By varying the intensity of the magnetic field, it is also possible to separate different paramagnetic minerals from each other. In this study, techniques used to separate valuable minerals from black sand are magnetic separator.
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Wang, Weiwei, Erdou Li, Zhengyao Li, Weiyao Zhu, and Yuanyuan Wang. "Recovery of Xenotime and Florencite from Silicate Minerals Using a Combined Technique of Magnetic Separation and Flotation." Minerals 14, no. 11 (2024): 1073. http://dx.doi.org/10.3390/min14111073.
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Xenotime (YPO4), a significant phosphatic minerl rich in heavy rare earth elements (HREEs), typically associates with granitic rocks, exemplified in the Wolverine rare earth deposit in Australia. A mineral composition analysis indicates that the primary valuable minerals in the deposit are principally xenotime and minor florencite, with quartz and illite as the main gangue minerals, showing a relatively simple mineral composition. The grade of rare earth concentrate was increased to 14.29% and the recovery reached 94.48% through the magnetic separation pre-enrichment test. However, a high-grade rare earth concentrate could not be achieved using magnetic separation alone. Further purification of the magnetic concentrate is conducted through flotation. The grade of rare earth concentrate reached 51.26%, and the recovery rate reached 90.47%. In summary, this process achieves the efficient recovery of xenotime and florencite, having substantial industrial potential.
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Gunawan, Hendry, and Arif Budiman. "PENENTUAN PERSENTASE DAN NILAI SUSEPTIBILITAS MINERAL MAGNETIK BIJIH BESI YANG BERASAL DARI TIGA LOKASI TAMBANG BIJIH BESI DI SUMATERA BARAT." Jurnal Fisika Unand 3, no. 4 (2024): 249–54. https://doi.org/10.25077/jfu.3.4.249-254.2014.
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ABSTRAKTelah dilakukan penelitian untuk menentukan persentase mineral magnetik dan nilai suseptibilitas magnetik dari sampel bijih besi dari tiga lokasi tambang di Sumatera Barat.Tiga lokasi tambang tersebut terletak di Kecamatan Asam Jujuhan Kabupaten Dharmasraya, Kecamatan Sangir Balai Janggo Kabupaten Solok Selatan dan Kecamatan Tigo Lurah Kabupaten Solok.Suseptibilitas magnetik diukur dengan Bartington MS2 Magnetic Susceptibility Meter dengan MS2B dual frequency sensor.Pengukuran suseptibilitas magnetik dilakukan pada 15 arah.Hasil penelitian menunjukkan bahwa nilai rata-rata persentase mineral magnetik bijih besi masing-masing lokasi berturut-turut yaitu 90,8%, 91,6% dan 95,1%. Nilai rata-rata suseptibilitas magnetik masing-masing lokasi berturut-turut didapatkan 1332,6×10-8 m3kg-1, 1339,2×10-8 m3kg-, dan 1347,5×10-8 m3kg-1. Nilai tersebut menunjukkan bahwa mineral magnetik bijih besi dari masing-masing lokasi diperkirakan didominasi oleh mineral ilmenit (FeTiO3) yang bersifat feromagnetik.Nilai koefisien keragaman dari ketiga lokasi tambang berturut-turut yaitu 3,17%, 5,32% dan 4,09% dan dapat disimpulkan bahwa penyimpangan perhitungan nilai suseptibilitas masih relatif kecil.Kata Kunci:Suseptibilitas, anisotopi, magnetik, dan bijih besiAbstractThe research to determine percentage of magnetic mineral and the value of susceptibility magnetic of iron ore from three mine locations in West Sumatera has been done. Those three areas are located in Asam Jujuhan Districts Dharmasraya, Sangir Balai Janggo Districts Solok Selatan and Tigo Lurah Districts Solok. Magnetic susceptibility is measured by using Bartington MS2 Magnetic Susceptibility Meter with MS2B dual frequency sensor, from fifteen different directions of samples. The result of research show that the average percentage of magnetic mineral of iron ore for each location are 90.8%, 9.16% and 95.1%. The average value of magnetic susceptibility are 1332.6×10-8 m3kg-1, 1339.2×10-8m3kg-1, and 1347.5×10-8 m3kg-1.From these values it can be estimated mineral iron ore mineral from each location is dominated by ilmenit mineral (FeTiO3) which are ferromagnetic. Diversity coefficient of three consecutive mine is 3.17%, 5.32% and 4.09% and it can be concluded that the deviation of susceptibility calculation is still relatively small.Keywords: susceptibility, anisotropy, magnetic, and iron ore
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Ponomarenko, O. "Method for Transformation of Weak Magnetic Minerals (Hematite, Goethite) into Strong Magnetic Mineral (Magnetite) to Improve the Efficiency of Technologies for Oxidized Iron Ore Beneficiation." Science and innovation 11, no. 2 (2015): 31–34. http://dx.doi.org/10.15407/scine11.02.031.
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Tanauma, Adey, and Ferdy Ferdy. "POTENSI SUMBERDAYA ALAM PASIR BESIPANTAI ARAKAN KABUPATEN MINAHASA SELATAN." JURNAL ILMIAH SAINS 15, no. 1 (2011): 225. http://dx.doi.org/10.35799/jis.11.2.2011.211.
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POTENSI SUMBERDAYA ALAM PASIR BESIPANTAI ARAKAN KABUPATEN MINAHASA SELATAN Adey Tanauma1) dan Ferdy1) 1)Program Studi Fisika FMIPA Universitas Sam Ratulangi, Manado 95115 ABSTRAK Pasir besi merupakan salah satu sumberdaya alam di Sulawesi Utara yang belum dimanfaatkan secara optimal. Salah satu lokasi yang cukup potensial untuk mendapatkan endapan pasir besi ini adalah pesisir pantai Arakan. Penelitian ini bertujuan untuk menentukan sifat-sifat magnetik endapan pasir besi yang terdapat di pesisir Pantai Arakan kabupaten Minahasa Selatan Provinsi Sulawesi Utara. Suseptibilitas magnetik dan magnetisasi saturasi sampel pasir besi Arakan mengindikasikan bahwa kandungan mineral magnetik yang dominan adalah magnetite. Ukuran bulir dari mineral magnetik terutama magnetite didominasi oleh bulir-bulir magnetik berukuran besar atau bulir magnetik dengan domain magnetik antara pseudosingle domain dan multi domain. Tingginya kandungan mineral magnetik berdasarkan nilai karakterisasinya, terutama nilai suseptibilitas magnetik memberikan peluang untuk pemanfaatan lebih lanjut dari sumberdaya alam ini. Kata kunci: histeresis magnetik, pasir besi, suseptibilitas THE POTENTIAL OF NATURAL RESOURCES OF IRON SAND IN ARAKAN COASTAL SUBPROVINCE OF SOUTH MINAHASA ABSTRACT Iron sand represent one of the natural resources in North Sulawesi which not yet been exploited in optimally. One of the location which quite potential to get this iron sand sediment is coastal area of Arakan. This research aim to determine the nature of magnetic of iron sand sediment which there are in coastal area of Arakan, Sub-province of South Minahasa, Province of North Sulawesi. Magnetic suseptibility and saturation magnetization of iron sand sampel of Arakan indicated that dominant magnetic mineral is magnetite. Seed size measure of magnetic mineral especially magnetite predominated by big sized magnetic seeds or magnetic seed with magnetic domain between domain pseudosingle and multi domain. The height content of magnetic mineral based on characteristic value, especially magnetic suseptibility give the opportunity for furthermore exploiting of this natural resources. Keywords : magnetic hysteresis, iron sand, suseptibility
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Prasetyo, Ihsan Junira, Hamdi Rifai, Syafriani Syafriani, and Rizaldi Putra. "Morphological Characteristics and Elemental Composition of Magnetic Minerals from the Volcanic Activity of Lake Maninjau Sediments." Trends in Sciences 19, no. 8 (2022): 3428. http://dx.doi.org/10.48048/tis.2022.3428.
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Lake Maninjau has formed by the eruption of the Maninjau volcano, which spewed volcanic material to various places. This volcanic material contains various mineral-forming elements, one of which are magnetic minerals that accumulate in lake sediments. This research aims to determine the morphological characteristics and composition of magnetic mineral elements from volcanic activity in the sediments of Lake Maninjau, Agam Regency, Indonesia. Characteristics of morphological and composition of magnetic mineral elements originating from volcanic activity can describe volcanic eruptions in the past. So, this research is very important for paleo-eruption studies because it can be used as supporting information to determine the distribution of volcanic ash from a volcanic eruption in the past based on the magnetic properties of the material. The sample was selected from the core MAN 18-41B site 12 with a depth of 35 - 36 cm because it has a high magnetic susceptibility value. Morphological images of lake sediment magnetic minerals were viewed using a SEM instrument and EDS detector that shows the composition of the elements that arrange magnetic minerals. In general, the analysis of morphological images shows that the magnetic mineral grains in the Maninjau lake sediments are irregular and porous. This indicates that the magnetic minerals originate from volcanic activity. The image produced by Back Scattered Electron (BSE) has a difference in brightness on the surface of the magnetic grains, which indicates that the bright surface contains high Fe elements and the dark surface contains high Si. The spectrum generated by EDS shows that the dominant elements present in magnetic minerals in lake sediments are Fe, Ti and Si. Based on the morphology and elemental composition, it is indicated that the minerals contained in the sediments of Lake Maninjau come from volcanic activity.
 HIGHLIGHTS
 
 Lake Maninjau has formed by the eruption of the Maninjau volcano, which spewed volcanic material to various places. This volcanic material contains various mineral-forming elements, one of which are magnetic minerals that accumulate in lake sediments
 Characteristics of morphological and composition of magnetic mineral elements originating from volcanic activity can describe volcanic eruptions in the past
 Morphological forms can provide information about the source of magnetic minerals derived because magnetic minerals have different properties, types, and morphology depending on the source
 Maninjau Lake sediments are dominated by Iron (Fe), Silica (Si), and Titanium (Ti). Based on the morphological images and elemental composition, the magnetic minerals present in the Maninjau lake sediments are indicated to come from volcanic activity
 
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Basuki, Rajab, Nanang Dwi Ardi, and Mimin Iryanti. "Analisis Sebaran Mineral Logam Pada Sedimentasi Batuan Di Daerah Kertajadi, Cidaun, Kabupaten Cianjur, Jawa Barat Menggunakan Metoda Geomagnet." Wahana Fisika 2, no. 1 (2017): 37. http://dx.doi.org/10.17509/wafi.v2i1.7019.
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Cidaun merupakan salah satu daerah pesisir pantai selatan yang terletak pada Kabupaten Cinajur Provinsi Jawa Barat. Salah satu kelebihan dari daerah pesisir pantai selatan Pulau Jawa adalah terdapat banyaknya mineral logam penghasil besi yang tersebar luas di sepanjang pesisir pantai. Oleh karena itu dilakukanlah eksplorasi untuk memetakan sebaran mineral logam yang ada di daerah Cidaun. Dalam melakukan eksplorasi mineral logam dibutuhkan suatu metode yang paling efektif yaitu eksplorasi geofisika dengan menggunakan metode geomagnet. Proses pengolahan data pada metode geomagnet dilakukan dengan menghitung nilai anomali magnetik dari medan magnetik total yang telah dilakukan koreksi terhadap koreksi harian dan koreksi IGRF. Kemudian dengan metode inversi data yang telah didapat dijadikan sebuah model. Selain itu dilakukan juga interpretasi kualitatif dan interpretasi kuantitatif. Interperetasi kualitatif dilakukan pada data yang telah dimodelkan menggunakan software surfer 11, apabila data tersebut terdapat anomali magnetik bernilai sangat tinggi yang berdekatan dengan nilai anomali magnetik bernilai rendah atau perubahan nilai anomali terjadi secara signifikan kemudian dilakukan proses interpretasi secara kuantitatif. Interpretasi kuantitatif pada penelitian ini dengan dilakukan deliniasi berupa proses sayatan pada perbedaan nilai anomali magnetik yang terjadi perubahan secara signifikan. Tahap selanjutnya data dari proses sayatan tersebut kemudian dilakukanlah pemodelan menggunakan software mag2dc untuk mengetahui sebaran mineral logam dapa daerah tersebut. Berdasarkan data yang telah diolah pada daerah Kertajadi, Cidaun, Kabupaten Cianjur, Jawa Barat dengan koordinat 698283 easting - 757162 easting dan 9180169 northing - 9171050 northing memiliki rentang nilai anomali magnetik -5 nT – 145 nT. Sedangkan nilai anomali magnetik pada daerah yang telah dilakukan proses sayatan memiliki rentang nilai 84.18 nT - 119.69 nT dengan nilai susptibilitas -0.041000 – 0.050001. Dari rentang nilai suseptibilitas tersebut diduga sebaran mineral yang yang memiliki nilai suseptibilitas positif merupakan bijih besi sedangkan yang bernilai negatif merupakan lempung dan endapan pasir. Dari hasil dari penelitian ini diharapkan data tersebut dapat dijadikan informasi dan referensi bagi masyarakat, peneliti lain dan pengusaha tambang dalam eksplorasi mineral logam.Cidaun is one of the coastal areas of the southern coast located in the district of West Java province Cinajur. One of the advantages of the southern coastal areas of Java is that there are many ferrous metal mineral producer widespread along the coast. Therefore, the exploration was undertaken to map the distribution of metallic minerals in the area Cidaun. In conducting metal mineral exploration required a most effective method is a geophysical exploration using geomagnetic methods. Data processing on geomagnetic method is done by calculating the value of the magnetic anomalies of the total magnetic field has a daily correction of correction and correction IGRF. Then, with the inversion method of data has been obtained serve as a model. The researcher also interpretation of qualitative and quantitative interpretation. Qualitative Interperetasi performed on the data that has been modeled using software surfer 11, when the inputs are very high-value magnetic anomalies adjacent to the value of the magnetic anomalies of low value or change in value of the anomaly occurred significantly later performed quantitative interpretation process. Quantitative interpretation in this study conducted a process of delineation of the incision on the difference in magnetic anomaly change significantly. The next stage of the data are then perform the incision process modeling using software mag2dc to determine the distribution of metallic minerals onshore areas. Based on the data that has been processed in the region Kertajadi, Cidaun, Cianjur, West Java coordinate 698283 easting - 757162 easting and 9180169 northing - 917105 northing and has a value range of magnetic anomaly -5 nT - 145 nT. While the value of magnetic anomalies in the area that has been carried out the process of incisions have a range of values 84.18 nT - 119.69 nT with susptibilitas value -0.041000 - 0.050001. Of the value range susceptibility is suspected distribution of minerals that have a positive susceptibility value is the iron ore which is negative while the clay and sand deposits. From the results of this study are expected data can be made of information and reference for the community, other researchers and mining company in mineral exploration.
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Chen, Ci Yun, Shu Ming Wen, Yong Jun Xian, Qi Cheng Feng, and He Fei Zhao. "Recovery of Iron from Tailings of Yangla Copper Ore by Magnetic Separation." Advanced Materials Research 634-638 (January 2013): 3442–45. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.3442.
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Against the dwindling status of mineral resources at present, effective recycling of tailings resources is an effective way to alleviate the shortage of resources, and to improve enterprise efficiency. This study was aimed to recover iron from tailings of Yangla copper ore, Fe content of which was 15.31%, and the content of strong magnetic iron mineral was about 11%. Considering low content of weak magnetic iron mineral and its complex and costly recovery process, weak magnetic iron mineral did not be recovered, so strong magnetic iron mineral was only recovered in this study. Under no grinding condition, Fe recovery of 6.47% with iron grade of 60.87% was obtained. It effectively recovered strong magnetic minerals from tailings, and got enterprise increase additional revenue with good economic benefits.
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Roberts, Andrew P. "Magnetic mineral diagenesis." Earth-Science Reviews 151 (December 2015): 1–47. http://dx.doi.org/10.1016/j.earscirev.2015.09.010.
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Vistarani, Arini Tiwow, Arsyad Muhammad, Sulistiawaty, Jeanne Rampe Meytij, and Indira B. Tiro Winda. "Analysis of Magnetic Mineral Types of Iron Sand at Sampulungan Beach, Takalar Regency Based on Magnetic Susceptibility Values." Materials Science Forum 967 (August 2019): 292–98. http://dx.doi.org/10.4028/www.scientific.net/msf.967.292.
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Analysis on magnetic minerals of iron sand in Sampulungan Beach, Takalar Regency based on magnetic susceptibility value has been conducted. Iron sand was taken on 30 points and extracted using a rod magnet, then measured magnetic susceptibility using Bartington susceptibility meter MS2 with the MS2B sensor. Furthermore, types of magnetic minerals were analyzed based on the value of magnetic susceptibility. The results showed that the percentage of magnetic mineral was higher along the trajectory near residential areas. Magnetic susceptibility values ranged from 33932.62 x 10-8 m3/kg to 71829.96 x 10-8 m3/kg. Based on the value of magnetic susceptibility, the dominant type of magnetic mineral in Sampulungan Beach is magnetite (Fe3O4) of 76 wt.%. The high magnetite potential in Sampulungan Beach can be further processed to be used in the metal industry.
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Sudarningsih, Sudarningsih, Fahruddin Fahruddin, Tetti Novalina Manik, and Dzikri Dzikri. "Morphological Study of Surface Magnetic Minerals, Case Study of North Banjarmasin Settlement Areas." Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat 21, no. 3 (2024): 206. https://doi.org/10.20527/flux.v21i3.20532.
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We have conducted research to identify the morphology of magnetic minerals from the land in the Banjarmasin regional settlement area. We used scanning electron microscopy and energy dispersive X-ray spectroscopy (SEM EDS) on the soil sample to look at the shape of its magnetic minerals. In nature, magnetic minerals can indicate the presence of heavy metals. The shape of a magnetic mineral can reveal its origin in either the litogenic or anthropogenic processes. There were mostly pseudo-single domain grains (3.29–10 m) and multidomain grains (> 10–134.69 m) in the study area. The multidomain grains came in the shapes of sperules, irregulars, angles, and prisms. These results indicate that in the residential land location there are magnetic mineral grains originating from litogenic and anthropogenic processes.
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Kim, Kwanho, and Soobok Jeong. "Separation of Monazite from Placer Deposit by Magnetic Separation." Minerals 9, no. 3 (2019): 149. http://dx.doi.org/10.3390/min9030149.
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In this study, mineralogical analysis and beneficiation experiments were conducted using a placer deposit of North Korea, on which limited information was available, to confirm the feasibility of development. Rare earth elements (REEs) have vital applications in modern technology and are growing in importance in the fourth industrial revolution. However, the price of REEs is unstable due to the imbalance between supply and demand, and tremendous efforts are being made to produce REEs sustainably. One of them is the evaluation of new rare earth mines and the verification of their feasibility. As a result of a mineralogical analysis, in this placer deposit, monazite and some amount of xenotime were the main REE-bearing minerals. Besides these minerals, ilmenite and zircon were the target minerals to be concentrated. Using a magnetic separation method at various magnetic intensities, paramagnetic minerals, ilmenite (0.8 T magnetic product), and monazite/xenotime (1.0–1.4 T magnetic product) were recovered selectively. Using a magnetic separation result, the beneficiation process was conducted with additional gravity separation for zircon to produce a valuable mineral concentrate. The process resulted in three kinds of mineral concentrates (ilmenite, REE-bearing mineral, and zircon). The content of ilmenite increased from 32.5% to 90.9%, and the total rare earth oxide (TREO) (%) of the REE-bearing mineral concentrates reached 45.0%. The zircon concentrate, a by-product of this process, had a Zr grade of 42.8%. Consequently, it was possible to produce concentrates by combining relatively simple separation processes compared to the conventional process for rare earth placer deposit and confirmed the possibility of mine development.
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Tiwow, Vistarani Arini, Muhammad Arsyad, Pariabti Palloan, et al. "ESTIMATION OF MINERALOGICAL, MORPHOLOGICAL, AND MAGNETIC PROPERTIES OF THE MINERAL SEDIMENTS OF GUANO CAVES IN THE KARST AREA." Journal of Chemical Technology and Metallurgy 60, no. 2 (2025): 275–85. https://doi.org/10.59957/jctm.v60.i2.2025.9.
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Guano sediments can record environmental changes in caves and be investigated through the magnetic mineral properties contained therein. The properties of magnetic guano depend on the type, concentration, shape and size of the magnetic mineral grains. These properties can provide clues to the cave-forming environment, both lithogenic and anthropogenic influences. Therefore, this study aims to analyse the magnetic properties, mineralogy, and magnetic mineral morphology of guano sediments in caves in the karst region of Maros, Indonesia, especially Bat caves and Dream caves. Guano samples were taken according to the condition of the cave floor. Magnetic susceptibility measurements are used to analyse the magnetic properties of guano sediments. X - Ray Diffraction (XRD) and Scanning Electron Microscopy - Energy Dispersive Spectroscopy (SEM - EDS) measurements were used to analyze the mineralogy and morphology of the magnetic mineral guano sediments, respectively. The results show that the magnetic susceptibility value at low frequencies ranges from (0.072 - 1.476) x 10-6 m3 kg-1 for Bat cave guano. The χLF value of Dream cave guano ranged from (2.867 - 85.507) x 10-6 m3 kg-1. The χFD (%) of Bat cave guano samples (2.78 - 8.70) %, while χFD (%) of Dream cave guano samples (0 - 4.18) %. The analysis of magnetic susceptibility, mineralogy, and magnetic mineral morphology showed that the guano samples from both caves tended to be affected by the ferrimagnetic mineral of the iron-titanium oxide group, namely magnetite (Fe3O4). The grain hapesof the guano samples from the two caves are similar; they are oval and irregular, and there are also fractures and heterogeneous grain distribution. Thus, the magnetic mineral sources in Bat cave and Dream cave guano tend to come from magnetic minerals controlled by lithogenic and anthropogenic components.
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Hasria, Muhammad Hasir, Tian Agustina, and La Ode Ngkoimani. "Studi Kajian Literatur Mengenai Suseptibilitas Mineral Batuan." Einstein's: Research Journal of Applied Physics 2, no. 1 (2024): 6–9. http://dx.doi.org/10.33772/einsteins.v2i1.444.
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Kajian literature suseptibilitas magnetic terhadap frekuensi pada mineral batuan. Tujuan kajian lieratur ini adalah mengidentifikasi mineral magnetik yang dominan berdasarkan data suseptibilitas magnetik dan menganalisis sumber mineral magnetic berdasarkan suseptibilitas magnetik. Penelitian dilakukan dengan menggunakan metode studi literature dimana peneliti mencari berbagai penelitian di wilayah Indonesia yang menggunakan metode suseptibilitas batuan sebagai metode penelitian primer. Metode suseptibitas batuan memiliki manfaat yang luas dalam berbagai bidang penelitian dan mengkarakterisasi berbagai jenis mineral dalam batuan. Penerapan metode suseptibitas batuan tidak hanya terbatas pada penelitian geologi, tetapi juga telah dimanfaatkan dalam analisis perubahan morfologi lingkungan, seperti mengidentifikasi dan memantau pencemaran air tanah, intrusi air laut dan perubahan lingkungan lainnya. Keunggulan metode ini dalam pelaksanaan akuisisi datanya yang relative cepat dan sederhana serta tidak bersifat merusak sampel yang diukur.
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Susilawati, Susilawati, Aris Doyan, Muhammad Taufik, et al. "Identifikasi Kandungan Fe Pada Pasir Besi Alam Di Kota Mataram." Jurnal Pendidikan Fisika dan Teknologi 4, no. 1 (2018): 105. http://dx.doi.org/10.29303/jpft.v4i1.571.
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The research on coastal sand in Mataram-Lombok city, located at several beaches, namely, Gading, Loang Baloq, Penghulu Agung, and Ampenan, is to determine the percentage of magnetic mineral content, metal content, and oxide mineral composition contained on those sand. Iron is a sediment containing magnetite (Fe3O4), maghemit (γ-Fe2O3) and hematite (α-Fe2O3) as the main mineral and several other minerals as a supporting mineral. Magnetic separation of natural sand by using a permanent magnet successfully separates the magnetic parts (iron sand) and non-magnetic. The separation results were then analyzed for Fe metal content, the quantity of metal content, and the quantity of oxide minerals using AAS, XRD, and XRF. The result of AAS analysis showed that Fe content in natural sand in Gading , Loang Baloq , Penghulu Agung and Ampenan Beach were 10,573 mg / gr, 12,816 mg / gr, 15,019 mg / gr, and 16,277 mg / gr, respectively. XRF analysis results in four locations have iron content respectively of 73.4%, 62.1%, 76.8%, and 69.8% in Hematite compound phase. As for the results of XRD analysis at these four locations the phases are magnetite and hematite phases.
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Xie, Xian, Zi Xuan Yang, Xiong Tong, and Ji Yong Li. "Research on Exploration of Mineral Processing for a Iron Ore." Advanced Materials Research 1094 (March 2015): 397–400. http://dx.doi.org/10.4028/www.scientific.net/amr.1094.397.
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Iron ore minerals are mainly silicate-type iron minerals in raw ore, and its distribution rate was 51.93%; followed by magnetic iron, and its distribution rate was 36.81%; content and distribution rate of other minerals was very low; element grade of iron, phosphorus, sulfur, silica were 11.90%, 0.043%, 0.013% and 45.23%, the main gangue were silica and calcium oxide, recyclable iron minerals mainly is magnetic iron mineral. Due to the grade of iron of raw ore and the amounts of optional magnetite was relatively little, in order to investigate the optional of low-grade ore, weak magnetic separation test and weak magnetic separation tailings-strong magnetic separation test were put into effect.
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Lakshmipatiraju, A., and L. Srinivasa Rao. "Heavy Mineral Concentration on the Visakhapatnam - Konada Coast as Evidenced by Magnetic Susceptibi1ity and Radioactivity." Journal Geological Society of India 47, no. 6 (1996): 717–24. http://dx.doi.org/10.17491/jgsi/1996/470607.
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Abstract Magnetic susceptibility, radioactivity, bulk density (?) and texture of black sands from the Visakhapatnam-Konada belt on the east coast of India were studied. The sands are fine-grained and well sorted with a nearly symmetrical distribution. Mass susceptibility (?) and radioactivity (R.A.) are related to weight percentage of magnetic minerals and grain percentage of radioactive minerals respectively. The magnetic fraction is made up of magnetite and ilmenite. The radioactive minerals present in the sands are monazite and rarely zircon. Susceptibility and R.A. of finer sieve fractions are high, reflecting higher proportions of magnetic and radioactive minerals. Mass susceptibility, Radioactivity and bulk density of black sands are high south of outcropping rock formations across the coast, reflecting heavy mineral concentration. A structural aspect of the coast, namely the Eastern Ghat formations cutting across the coast, seems to be one of the controls on heavy mineral concentration.
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Silveira, Vitor E. P., Natália B. dos Santos, Daniel R. Franco, et al. "Environmental magnetism evidence for longshore drift distribution of Fe-bearing phases: An example from the Brazilian southeastern coastal region." Journal of Sedimentary Research 91, no. 11 (2021): 1133–50. http://dx.doi.org/10.2110/jsr.2020.089.
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ABSTRACT The accumulation of heavy minerals along a part of the southeastern Brazilian coast (northern coast of Rio de Janeiro State, Brazil) provides insight into sedimentary provenance and transport by longshore drift. In particular, recent work has focused on heavy minerals as tracers to determine sedimentary sources and transport pathways, indicating a mineral distribution according to the northward and southward coastal transport cells. There is also evidence of heavy-mineral transport by the Paraíba do Sul River. However, research has not been done in this area on the opaque fraction (iron oxides and oxyhydroxides), which are good tracers for provenance and distribution processes. Here we intend to: 1) characterize the spatial variation of the magnetic properties of heavy-mineral contents throughout a coastal area of the Itabapoana and Paraíba do Sul River mouths (state of Rio de Janeiro), 2) evaluate the contribution of coastal dynamics on the mineral distribution along this coastal area, 3) provide contributions on the provenance of iron-bearing minerals. Results indicate that a bimodal pattern was observed for the magnetic remanence of magnetite and hematite near the Paraíba do Sul River. For the northernmost section, goethite exhibits a gradual increase in concentration towards the central part of the study area. Additionally, higher heavy-mineral content is observed at the northern coastal section, which may be related to coastal morphology, which is exposed to high-energy beach processes. It is possible to verify three sampling groups in accordance with their magnetic properties: 1) the “southernmost” and 2) the “northernmost” groups, suggesting a mineral provenance related to the Paraíba do Sul and Itabapoana rivers, respectively, as possible major sources, and 3) another at the intermediate section of the area, possibly linked to the erosion of the Barreiras Formation bluffs. Results also show a correspondence between the variability of magnetic parameters and the main directions of the coastal transport cells.
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Manurung, Dwi Putri K., Dini Fitriani, Eleonora Agustine, Kartika Hajar Kirana, and Petrus Ardi Tama. "Magnetic and Morphological Characterization of Magnetic Minerals from Sarimukti Landfill." Jurnal Penelitian Pendidikan IPA 11, no. 6 (2025): 371–82. https://doi.org/10.29303/jppipa.v11i6.11229.
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Sarimukti landfill serves as a waste disposal site. Leachate generated from waste accumulation is discharged through pipelines into multiple retention ponds. This study aims to assess contamination levels in leachate deposits by analyzing the magnetic properties and morphology of magnetic minerals collected from four retention ponds, along with measurements of pH, EC, and TDS in the pond water. Magnetic susceptibility values range from 37.4 – 409.5 (×10⁻⁸) m³/kg, indicating ferrimagnetic mineral dominance. The values range from 0.81% - 5.96%, where >2% is often associated to pollutant-contaminated soils. A negative correlation between and suggests a minor contribution of superparamagnetic grains from pedogenesis. Scanning Electron Microscopy - Energy Dispersive Spectroscopy (SEM-EDS) analysis identifies spherule and hedral magnetic mineral shapes, with O and Fe as dominant elements and minor Ti, indicating magnetite and titanomagnetite presence. Other elements, including C, Mg, Al, Si, K, Ca, and Mn, likely originate from anthropogenic sources.
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Firmansyah, Fikri, and Arif Budiman. "Pendugaan Mineralisasi Emas Menggunakan Metode Magnetik di Nagari Lubuk Gadang Kecamatan Sangir, Solok Selatan, Sumatera Barat." Jurnal Fisika Unand 8, no. 1 (2019): 77–83. http://dx.doi.org/10.25077/jfu.8.1.77-83.2019.
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Telah dilakukan penelitian tentang pendugaan mineralisasi emas di Nagari Lubuk Gadang, Kecamatan Sangir, Solok Selatan, Sumatera Barat. Penelitian ini menggunakan metode magnetik dengan tahapan yaitu akuisisi data lapangan, pengolahan data dan interpretasi data. Alat yang digunakan adalah Earth Magnetometer EM2 (Microteslas) AlphaLab.Inc. Perangkat lunak yang digunakan untuk membuat peta kontur adalah software Surfer 11 dan pemodelan 2D menggunakan software Mag2dc. Pengukuran medan magnetik dilakukan pada 50 titik pengamatan dengan luas daerah 670 m2. Hasil penelitian menunjukkan bahwa ditemukan mineral pembawa emas yaitu pirit dengan suseptibilitas magnetik 0.000035 – 0.005 SI, kalkopirit dengan suseptibilitas magnetik 0.000023 – 0.0004 SI, troilit dengan suseptibilitas magnetic 0.00061 – 0.0017 SI, pirhotit dengan suseptibilitas magnetik 0.00046 – 1.4 SI, dan siderit dengan suseptibilitas magnetik 0.0013 – 0.011 SI merupakan mineral sulfida magmatik yang terdapat dalam batuan metamorf dan sedimen. Disamping itu mineral emas juga berasosiasi dengan mineral magnetic yaitu batuan beku (intrusi) yaitu porfiri dengan suseptibilitas magnetik 0.00025 – 0.21 SI. Zona mineralisasi emas diperkirakan terletak pada kedalaman 5 meter sampai dengan 35 meter di bawah permukaan tanah.Kata kunci: Metode magnetik, mineralisasi emas, suseptibilitas.
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Rahmanb, Md Aminur, Pradip Kumar Biswasb, Mohammad Nazim Zamanb, Md Yunus Miah, Tofazzal Hossain, and SM Imamul Huq. "Characterization of the sand of Brahmaputra river of Bangladesh." Bangladesh Journal of Scientific and Industrial Research 47, no. 2 (2012): 167–72. http://dx.doi.org/10.3329/bjsir.v47i2.11448.
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The aim of this paper is to study on the mineralogy, morphology, magnetic property and composition of the sand of Brahmaputra River, Bangladesh. The sand has been collected from randomly selected seven places and separated by High Intensity Rolling Magnetic Separator into three fractions, viz. magnetic, para-magnetic and non-magnetic parts. The identifications of the valuable heavy minerals existing in these fractions have been performed. The valuable heavy minerals in the separated fractions have been counted under reflected and polarizing microscope and it is found that the magnetic fraction contains ilmenite, magnetite and garnet. The major grain size fraction of the magnetic fraction is 125 - 250 ?m (57.18%). Zircon, rutile, xenotime, monazite, sillimanite etc. have been counted in other two fractions. X-ray Diffraction (XRD), X-ray Fluorescence (XRF) and Isodynamic Separator have been applied for mineral assessment and to quantify the relative proportion of mineral species. DOI: http://dx.doi.org/10.3329/bjsir.v47i2.11448 Bangladesh J. Sci. Ind. Res. 47(2), 167-172, 2012
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Cavanough, G., and P. N. Holtham. "Rapid Characterization of Magnetic Separator Feed Stocks in Titanium Minerals Processing." Physical Separation in Science and Engineering 13, no. 3-4 (2004): 141–52. http://dx.doi.org/10.1080/14786470412331308033.
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Magnetic separation is widely used in the processing of titanium minerals. The expected mineral recoveries are assessed by performing laboratory magnetic separations of representative samples to determine the distribution of magnetic components. This is an inherently slow process performed on relatively small samples. This paper describes the development of an inductance based device to rapidly determine the mass distribution of the magnetic properties of a titanium mineral sample. The system is best described as an hourglass with mineral flowing from a hopper through a small inductance coil. The impedance of the coil is proportional to the mean magnetic susceptibility of the number of particles within the coil. An algorithm has been developed to determine the percentage of the feed material at each level of magnetic susceptibility from this measurement. The results are identical to those determined using a laboratory magnetic separation, and are obtained in a fraction of the time. Accuracy of the device has been proven by simulation and by testing of plant samples and comparing the results using the new system with measurements made using a magnetic separator.
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Chen, Yong, Yong Sheng Song, Gui Ying Zhou, and Wen Juan Li. "Recovery Pb, Zn and S from a Chinese Lead-Zinc Mine Beneficiation Plant Tailing." Advanced Materials Research 997 (August 2014): 583–86. http://dx.doi.org/10.4028/www.scientific.net/amr.997.583.
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Detailed characterisation and recovery of galena, sphalerite, and pyrrhotite from the beneficiation plant tailing of YouXi, China, was investigated. Different characterisation techniques viz. size analysis, chemical analysis, mineral analysis by Mineral Liberation Analyser（MLA）were carried out. Based on the appreciable differences in specific gravity, floatability and magnetic susceptibility between the desired lead, zinc, sulphur minerals and the gangue minerals, the flow sheets comprising desliming, flotation and magnetic separation, was used to recover galena, sphalerite, and pyrrhotite values. A lead and zinc concentrate of Pb 16.02%, Zn 35.1% and sulphur concentrate assays 35% S and 56% Fe can be produced from the tailing.
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Bilalodin, Bilalodin. "KAJIAN SIFAT MAGNETIK DARI PASIR BESI PANTAI LOGENDING KABUPATEN KEBUMEN." Molekul 5, no. 2 (2010): 105. http://dx.doi.org/10.20884/1.jm.2010.5.2.83.
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Study on magnetic properties of iron sand on the Logending beach sand has been done. The research aims to identify the mineral content and characterization of magnetic properties on the Logending beach sand. The irond sand samples taken from the Logending beach with several lokation. Sand then dried, determined density and magnetic content is separated using a permanen magnet. The iron sand were analyzed using XRD ( X-ray difraction) and characterization of magnetic properties using the VSM (Vibrating sample magnetometer). The research shows that minerals are contained hematit (Fe2O3), with a value of susceptibility is 0.43 x10-6 m3/kg. The main magnetic mineral of iron sand from logending beach is paramagnetic.
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Jordanova, Neli, and Diana Jordanova. "Thermomagnetic analysis applied for identification of lithogenic and pedogenic iron oxides in topsoils from Bulgaria." GeoStudies 1 (May 21, 2024): 27–42. https://doi.org/10.3897/geostudies.1.e115530.
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Identification of magnetic minerals, which determine the magnetic properties of natural rocks, sediments and soils, is of crucial importance for any further interpretation of their magnetic signature in environmental or paleogeographical context. One of the major and widely used methods for determination of kind of magnetic phases in natural materials is by obtaining the Curie/Neel temperature of the respective magnetic mineral. In this contribution, we report a set of thermomagnetic measurements of high-temperature behavior of magnetic susceptibility for topsoils from the territory of Bulgaria, aiming to reveal the pedogenic and lithogenic signature. The data are considered and reported in respect to the parent rock type. Our results suggest that pedogenic magnetic minerals are represented mainly by fine-grained maghemite and/or hematite with possible Al-substitutions in the crystal lattice. This phase is expressed on the heating run of the thermomagnetic curve as a "hump" with a maximum at 250–300 °C. Coarse-grained magnetite is identified as a dominant lithogenic magnetic mineral. Hematite's presence in a sub-set of red-colored soils is confirmed by additional analyses of isothermal remanence acquisition curves. Two hematite coercivity components were identified, related to pedogenic and lithogenic origin, respectively.
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GHABRU, S. K., R. J. ST. ARNAUD, and A. R. MERMUT. "USE OF HIGH GRADIENT MAGNETIC SEPARATION IN DETAILED CLAY MINERAL STUDIES." Canadian Journal of Soil Science 68, no. 3 (1988): 645–55. http://dx.doi.org/10.4141/cjss88-062.
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High gradient magnetic separation is a simple, inexpensive, nondestructive and rapid means of concentrating iron-bearing minerals to nearly monomineralic levels, particularly those present in undetectable proportions in soil clays. The use of variable magnetic flux density further allows subfractionation of the iron-bearing minerals. Besides iron content, the efficiency of high gradient magnetic separation is highly dependent on the particle size. The stability of suspension, suitable flow rates, contact time and the packing of steel wool are significant factors. The experimental setup used in this study was effective for 2–0.2 μm clays but modifications are necessary to adapt the technique to finer (< 0.2 μm) particle sizes. This resulted in the separation of three distinct mineral groups: (a) smectite, kaolinite, quartz and feldspars, which were entirely associated with the > 1.38 Tesla (T) fraction, suggesting that the smectite and kaolinite present in these soils contain little or no iron; (b) vermiculite, mixed-layer minerals and mica, which were present in all the high gradient magnetic separation fractions; and (c) amphiboles and hydroxy interlayered minerals concentrated only in the < 1.38 T fractions. The contents of hydroxy interlayered minerals and amphiboles increased with decreasing levels of magnetic flux density and concentrated in the < 0.20 T fraction, from which they were further separated into monomineralic separates. A very small proportion of the interlayered mineral present in the total clay had a non-iron-bearing (probably Al-Mg interlayered) counterpart. The iron-bearing vermiculite, mixed-layer minerals (weathering products of biotite) and mica showed different iron contents. Key words: Magnetic separation, iron-bearing minerals, clay mineralogy, X-ray diffraction, scanning electron microscopy
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Lei, Peng, Xinwen Xu, Ziyi Yang, et al. "Magnetic Mineral Dissolution in Heqing Core Lacustrine Sediments and Its Paleoenvironment Significance." Minerals 14, no. 11 (2024): 1096. http://dx.doi.org/10.3390/min14111096.
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The magnetic parameters within lacustrine sediments serve as invaluable proxies for deciphering the paleoenvironmental and paleoclimatic conditions. However, the dissolution of magnetic minerals can significantly alter detrital magnetic mineral assemblages, thereby complicating their interpretation in paleoenvironmental reconstructions. In an effort to clarify the impact of this dissolution on the grain size of magnetic minerals in lacustrine sediments, we undertook a thorough analysis of the rock magnetic properties on samples from the interval characterized by low ARM (anhysteretic remanent magnetization)/SIRM (saturation isothermal remanent magnetization) values between 140 and 320 ka in the Heqing (HQ) lacustrine drill core, located in Southwest China. Temperature-dependent magnetic susceptibility and FORC diagrams revealed a predominance of single-vortex and pseudo-single domain (PSD) magnetite and maghemite within the sample. When compared to samples from both the glacial and interglacial periods, the high SIRM, elevated magnetic susceptibility, and low ARM/SIRM ratio intervals from 140 to 320 ka suggested a high concentration of magnetic minerals coupled with a relatively low concentration of fine-grained particles in the sediments. The reductive dissolution of the fine-grained magnetic oxides is responsible for the reduction in the fine-grained magnetic particles in this interval. Our findings indicate that pedogenic fine-grained magnetite and maghemite are the first to dissolve, followed by the dissolution of coarser-grained iron oxides into finer particles. This process underscores the complex interplay between magnetic mineral dissolution and grain size distribution in lacustrine sediments, with significant implications for the reliability of paleoenvironmental interpretations derived from magnetic parameters.
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Lavrinenko, A. A., and P. A. Sysa. "Magnetic Hydrocycloning of Weakly Magnetic Mineral Slime." Journal of Mining Science 60, no. 3 (2024): 501–7. http://dx.doi.org/10.1134/s1062739124030177.
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Corrans, Ian James, and Jan Svoboda. "Magnetic Separation in South Africa." Magnetic Separation News 1, no. 4 (1985): 205–32. http://dx.doi.org/10.1155/1985/17201.
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The use of magnetic separators in the various mineral processing facilities in South Africa is described. A large number are used to recover medium in dense medium plants. The manufacture of various types of magnetic separation machines by three local suppliers is highlighted. The potential use of highgradient and/or high–intensity magnetic separation in the recovery of gold, uranium, and phosphate minerals is discussed.
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Proidak, Andrii, Mykhailo Gasyk, and Yurii Proidak. "Research into phosphate mineral composition and waste phosphorite ore." Mining of Mineral Deposits 15, no. 1 (2021): 96–102. http://dx.doi.org/10.33271/mining15.01.096.
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Purpose. Theoretical and experimental studies of chemical and mineral composition and the structure peculiarities of phosphorites from Ukrainian deposits to define the degree of their suitability for other industries. Methods. The ore chemical composition was determined by conventional (wet) analysis using standard certified chemical reagents. The mineral composition was studied on the scanning electron microscope equipped with the attachment for the energy-dispersive electron microprobe analysis (EMPA) with the software for calculating the chemical composition of the studied sample microvolume. The petrographic analysis was carried out by the traditional methods of microscopic section preparation with subsequent identification and description of the minerals. The microscopic study of the original ore samples aimed at their mineral composition determination was conducted on the Nu optical microscope (Germany) both in transmitted and reflected light. The thin and polished sections prepared using the standard technology were used as samples. In the laboratory environment, the phosphorites were subjected to magnetic dressing in magnetic fields with different intensity. The experiments in the weak field were modelled with the help of the magnetic analyzer while the experiments in the strong magnetic field were modelled on the rotor separator. The flotation dressing method was studied on the laboratory mechanical flotation machine. Findings. It was found that phosphate nodules are rounded mineral formations of irregular shape; they consist of sand bound with the yellow-brown phosphate cement. Ore useful substance is a phosphorus-bearing mineral that by the element chemical composition corresponds to fluorocarbon-hydroxyl-apatite with the dominant content of Ca (45.23%), P (15.67%), and B (27.87%). The results of the integrated petrographic study of the phosphorite samples from the ore body of “Peremoha” area are presented. Originality.The study has revealed that phosphorus-containing substance in the phosphorite samples is the mass that cements barren minerals (mainly quartz, glauconite, calcite and plagioclase). Practical implications. According to the phosphate content level, the phosphorites from Malokamyshevatske, Iziumske and Sinichino-Yaremovske deposits can be treated as minerals for ferrophosphorus smelting. Keywords: ferrophosphorus, ore substance, phosphorite, mineral varieties, petrography, apatite
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Faesal, Andi, Arifudin Idrus, and Djoko Wintolo. "PROMINE." PROMINE 5, no. 2 (2017): 48–53. http://dx.doi.org/10.33019/promine.v5i2.918.
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The research sites are located in the village of Berambang, Sekotong District, West Lombok Regency,West Nusa Tenggara Province. This area was dominated by volcanic rocks composed of dasiticvolcanic rock, diatrema breccia, and diorite intrusion. Berambang area shows alteration in the form ofpotassic, propylitic, advanced argillic, and argillic alterations where in some places accompanied bypyritisation and stockwork structure, the type of mineralization in this area is a porphyry copper-goldtype. In the potasic alteration zone there are minerals that have a strong anomaly response to themagnetic due to the presence of oxide minerals magnetite (Fe2O3). Mineral sulfides such as pyrite(FeS2) and chalcopyrite (CuFeS2) will also provide significant anomalous responses that have anabundance of 2-5% in the potassic zone. In a propylitic alteration zone characterized by chlorite,calcite and epidote minerals that do not respond to magnetic anomalies, the presence of pyriteminerals, hematites and chalcopyrite with abundance of ≤1% will provide some magnetic anomaly inthe propylitic zone. As for advanceargillic alteration zones characterized by mineral andalusite, aluniteand quartz, there will not be any magnetic anomalies, the phenomena was due to the rarity ofmineralization in this zone gives an insignificant anomalous impact. Meanwhile, for the argillic zonecharacterized by mineral illite, kaolinite and smectite will not have anomalous magnetic impact, veryrare mineralization in the argillic zone so that the magnetic anomaly is not significant. From the floatingEuler 3D shows an anomalous source from a depth of 0 meters to a depth of more than 400 meters.
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НUBINA, Viktoriia, Valentyn VERKHOVTSEV, Victor Yatsenko, et al. "MINERAL AND PHYSICAL AND CHEMICAL CHANGES IN MAGNETITE QUARTITES OF THE VALYAVKINSKY AND NOVOKRIVORIZKY DEPOSITS OF THE KRYVBUS DURING THEIR MINERAL PROCESSING." Visnyk of Taras Shevchenko National University of Kyiv. Geology, no. 1 (104) (2024): 36–48. http://dx.doi.org/10.17721/1728-2713.104.05.
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Background. In order to study the mineral physical and chemical changes that occur with iron ore (magnetite quartzites) of the Valyavkinsky and Novokrivorizky deposits of the Kryvorizka iron ore basin during the mining and processing of ore at the mining and processing plant "ArcelorMittal Kryvyi Rih", the entire technological chain of mining and mineral processing was analyzed: magnetite quartzite (ore) in naturaldeposits → ore after explosion → ore after crushing at crushing plants → intermediate magnetic products and tailings of all stages of beneficiation → final magnetite concentrate. Methods. Laboratory and analytical studies, which include mineragraphic, petrographic, electron microscopic studies of iron ore, X-ray fluorescence method and atomic emission spectral analysis (determination of the content of macro- and microelements in the original ore, magnetic concentrate and tailings), X-ray diffraction analysis, microprobe analysis of magnetic concentrate and tailings, thermogravimetric analysis, chromatographic method (determination of the specific surface of a substance), sedimentation analysis, measurement of magnetic characteristics, etc. were used. Results. It was established that at the first stage of mining production (drilling and blasting, ore crushing in the quarry and at the crushing plant) there are no significant changes in minerals. At the next stage of deep processing and concentration of minerals at the ore beneficiation plant, during which the ore undergoes 3 stages of crushing, classification, desliming, and wet magnetic separation, two completely new products are formed – magnetite concentrate and tailings, which are fundamentally different from the original ore – both at the rock level and at the mineral one. Сonclusions. It was substantiated that in the process of enrichment of magnetite quartzites, the structural and textural characteristics, mineral and chemical composition, state of aggregation of the iron ore, structural and crystallochemical properties of the main ore mineral magnetite change significantly.
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Cheng, Zhong Hang, Ke Xu Yu, Tong Lin Zhao, and Xiao Li Wang. "Experimental Research on the Lean Magnetite of RongTian Mine Corporation by Single Magnetic Process." Advanced Materials Research 826 (November 2013): 29–33. http://dx.doi.org/10.4028/www.scientific.net/amr.826.29.
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In this paper, the mineral properties of the lean magnetite in RongTian mine corporation was studied, during which the analysis of the mineral properties, prelimenary separation on the lump mine, two-section grinding, one section fine screening and three-section low intensity magnetic separation process were carried out. The results showed that if the suitable mineral processing flowsheet is adapted, we can achieved such index:concentrate grade of 63.65%, Fe recovery of 47.12% based on the ore grade of 10.05%.. According to the experimental result analysis, most of the iron minerals could be used to support the steel production of LingGang Group.Single magnetic process proved to be an suitable and promising process to conduct the fine particles of lean magnitite.
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Xiao, Junhui, Wei Ding, Yang Peng, Tao Chen, Kai Zou, and Zhen Wang. "Extraction of Nickel from Garnierite Laterite Ore Using Roasting and Magnetic Separation with Calcium Chloride and Iron Concentrate." Minerals 10, no. 4 (2020): 352. http://dx.doi.org/10.3390/min10040352.
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In this study, segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore. The garnierite laterite ore containing 0.72% Ni, 0.029% Co, 8.65% Fe, 29.66% MgO, and 37.86% SiO2 was collected in the Mojiang area of China. Garnierite was the Ni-bearing mineral; the other main minerals were potash feldspar, forsterite, tremolite, halloysite, quartz, and kaolinite in the garnierite laterite ore. The iron phase transformations show that nickel is transformed from (Ni,Mg)O·SiO2·nH2O to a new nickel mineral phase dominated by [Ni]Fe solid solution; and iron changed from Fe2O3 and FeOOH to a new iron mineral phase dominated by metal Fe and Fe3O4 after segregation roasting. Ferronickel concentrate with Ni of 16.16%, Fe of 73.67%, and nickel recovery of 90.33% was obtained under the comprehensive conditions used: A roasting temperature of 1100 °C, a roasting time of 90 min, a calcium chloride dosage of 15%, an iron concentrate dosage of 30%, a coke dosage of 15%, a coke size of −1 + 0.5 mm, a magnetic separation grinding fineness of <45 μm occupying 90%, and a magnetic separation magnetic field intensity of H = 0.10 T. The main minerals in ferronickel concentrate are Fe, [Ni]Fe, Fe3O4, and a small amount of gangue minerals, such as CaO·SiO2 and CaO·Al2O3·SiO2.
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Agricola, J. N. M., J. L. Top, and A. F. Fort. "Magnetic Separation of Weakly Magnatic Copper Minerals." Magnetic Separation News 2, no. 4 (1989): 191–95. http://dx.doi.org/10.1155/1989/57496.
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High Gradient Magnetic Separation of small (5-38 µm) weakly magnetic copper mineral particles from a copper concentrate and ore has been performed. In previous work coarser fractions of these minerals, bornite and chalcopyrite, were separated successfully. The recovery of the smaller particles in the magnetic fraction decreases but their grade increases compared to the results obtained on the larger particles. At a magnetic background field of 1.3 T the concentrate was upgraded from 72% bornite and chalcopyrite to 86% with a recovery of 82% and the ore from 16% magnetic minerals to 44% with a recovery of 72%.
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Maidani, Delvi Putri, Hamdi Rifai, Letmi Dwiridal, and Fatni Mufit. "The Effect of Chemical Fertilizers on The Magnetic Susceptibility Value and Soil Fertility of Paddy Soils in Surantih, Kabupaten Pesisir Selatan." JPSE (Journal of Physical Science and Engineering) 8, no. 1 (2023): 52. http://dx.doi.org/10.17977/um024v8i12023p052.
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Pesisir Selatan is a district where population depends on agriculture such as lowland rice. The rice seeds used were IR66. Efforts to improve the quality of Paddy soils seeds are fertilizing with chemical fertilizers. Chemical fertilizers used are Urea, KCL and Phonska. Continuous and excessive use of fertilizers will cause a decrease in the level of soil fertility due to the reaction between fertilizer minerals and soil minerals which also affects the magnetic susceptibility value. Based on these problems, further research was carried out to see the difference in the magnetic susceptibility value of paddy soils to the use of chemical fertilizers using the rock magnetism method with magnetic susceptibility parameters. The results showed that the paddy soil before and after being planted with rice seeds using chemical fertilizers decreased and increased the value of magnetic susceptibility due to the reaction between mineral fertilizers and soil minerals and waterlogging during the cultivation process. Meanwhile, the paddy soil before and after planting rice seeds that did not use chemical fertilizers decreased the magnetic susceptibility value quite far due to the absence of other mineral additions in the paddy soil such as chemical fertilizers.
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MENSHOV, Оleksandr. "FLUIDS MIGRATION IMPACT ON SOIL MAGNETIC MINERALOGY." Visnyk of Taras Shevchenko National University of Kyiv. Geology, no. 1 (104) (2024): 30–35. http://dx.doi.org/10.17721/1728-2713.104.04.
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Background. The war in Ukraine arises the urgent need to intensify hydrocarbon production on its own territory in order to maintain and develop the country's energy independence. The effectiveness, low cost and relevance of the involvement are demonstrated by magnetic methods of studies of the near surface geological section and the soil for the oil and gas prospecting. Methods. The methodology of magnetic studies for the hydrocarbon prospecting is based on the methods of studying the environmental magnetism and soil, precision magnetic survey of natural systems and authigenic models of changes in magnetic mineralogy under the influence of hydrocarbon fluid migration. Results. The crucial aim is to distinguish the sources of the formation of the magnetic minerals. In most cases, soils contain minerals of natural pedogenic origin, authigenic secondary magnetic minerals, and sometimes detrital fine-coarse magnetic phases. For Ukraine, magnetite, maghemite, hematite, and goethite are the most common magnetic minerals of soils of the pedogenic origin. At the same time, the experience of conducting magnetic mineralogical analyzes of soils in the territories of oil and gas deposits indicates the presence of iron sulfides. First of all, monoclinic pyrrhotite is identified. The soils also contain accompanying hexagonal pyrrhotite, pyrite, and greigite. The results of thermomagnetic analyzes and hysteresis loops of soil samples collected at the territories of hydrocarbon deposits are presented and their mineral composition is analyzed. Conclusions. The results of the study of the impact of hydrocarbon fluid migration (microseepage) on the change in the mineral composition of soils indicate significant informativeness and the perspective of introducing the method into the complex of geological exploration works at various stages. Authigenic changes of magnetic minerals in the near surface geological section and soil, as well as natural and anthropogenic accumulation of hydrocarbon products in soils, cause changes in magnetic properties and form magnetic field anomalies.
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Li, Xiu Juan, Si Qing Liu, Yang Zhao, and Ting Ting Li. "Tin Recovery from a Cassiterite-Bearing Magnetite Refractory Ore." Applied Mechanics and Materials 543-547 (March 2014): 3721–24. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.3721.
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s. Situated in Honghe Municipality of China, a magnetite-bearing cassiterite ore deposit is characterized by iron and tin minerals association in the oxide ores. Magnetite is the main iron mineral containing fine-sized cassiterite that should be recovered. Except for the complex mineral composition, the valuable minerals are finely disseminated in the ore, a joint process of magnetic and gravity concentration was used to process the ore. Results show that, a tin concentrate and a tin middlings can be obtained in processing the tailings of Low-intensity magnetic separation (LIMS), assaying 31.76% Sn and 1.98% Sn at the recovery of 46.18% and 13.36% respectively. The results provide some valuable reference in utilization of the tailings of the ore.
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Just, J., N. Nowaczyk, A. Francke, L. Sagnotti, and B. Wagner. "Climatic control on the occurrence of high-coercivity magnetic minerals and preservation of greigite in a 640 ka sediment sequence from Lake Ohrid (Balkans)." Biogeosciences Discussions 12, no. 16 (2015): 14215–43. http://dx.doi.org/10.5194/bgd-12-14215-2015.
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Abstract. The bulk magnetic mineral record from Lake Ohrid, spanning the past ca. 640 ka, shows a strong relationship to environmental conditions on glacial–interglacial and millennial time scales. During extremely cold glacials, a lower accumulation of organic matter and likely enhanced mixing of the water-column coincides with the presence of greigite, whereas greigite is absent in sediments deposited during less severe glacials. Those "non-greigite" glacial sediments are characterized by high concentration of high-coercivity magnetic minerals, which relates to enhanced erosion of soils that had formed during the preceding interglacials. In contrast, magnetite dominated magnetic mineral assemblages characterize interglacial deposits and most likely originate from detrital particles of physically weathered rocks. Superimposed on the glacial–interglacial behavior are millennial scale oscillations in the magnetic mineral composition that parallel variations in summer insolation. Likewise to the process on glacial–interglacial time-scales, low summer insolation and a retreat in vegetation resulted in enhanced erosion of soil material. Our study highlights that rock-magnetic studies, in concert with geochemical and sedimentological investigations, provide a multi-level contribution to environmental reconstructions, since the magnetic properties can mirror both, environmental conditions on land and intra-lacustrine processes.
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Qiao, Qingqing, John D. A. Piper, and Zhuangzhuang Lv. "Multivariate Analysis of Magnetic Parameters and Trace Metals in Atmospheric Dustfall and its Environmental Implications in Northern China." Minerals 12, no. 12 (2022): 1598. http://dx.doi.org/10.3390/min12121598.
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Magnetic measurement was combined with geochemical analysis to investigate the trace metal pollution of atmospheric dustfall from rural areas of Inner Mongolia and urban regions of Hebei province in northern China. It is found that the type of magnetic mineral within atmospheric dustfall samples in Inner Mongolia is similar to those found in Hebei province, but the atmospheric dustfall samples in Inner Mongolia have lower magnetic mineral concentrations and finer particles. Linear multiple regression analyses show that the relationship between magnetic parameters and trace metals is found to vary between the contrasting rural and urban areas, and is controlled by the different source magnetic minerals. The concentration- and type-dependent magnetic properties of the particles correlated strongly with the concentrations of trace metals derived from natural processes, and the grain size-dependent magnetic parameters correlated negatively and significantly with the concentrations of trace metals derived from anthropogenic activities.
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Kusumadewi, An-Nissa, Lisda Damayanti, Rukiah Rukiah, and Risdiana Risdiana. "Changes in the magnetic attraction by mineral water in the magnetic dental attachment." Odonto : Dental Journal 11, no. 2 (2024): 298. https://doi.org/10.30659/odj.11.2.298-304.
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Background: The magnetic dental attachment is an integral component of the overdenture. Dental magnetic attachment will be in the oral cavity and is influenced by the oral environment. Previous study has shown that acid solutions contained in commonly consumed foods or drinks can corrode magnets and reduce magnetic attraction. Consuming mineral water in daily life is a common thing done by Indonesians. The objective of this research is to investigate the impact of mineral water on both the magnetic attraction and the occurrence of corrosion.Method: Mineral water which are sold commercially with different pH of 6.8 and 7.5, were used. Magnetic dental attachments were immersed in both types of mineral water for 7 and 14 days. The magnetic attraction was quantified by employing a materials testing machine and corrosion on the magnetic surface was seen using SEM. Result: After the immersion of magnetic dental attachments in mineral water with a pH level of 6.8 for 7 days and 14 days, magnetic attraction decreased by 5.36% and 21.77%, respectively. While after immersion at a pH level of 7.5 for 7 days and 14 days, magnetic attraction decreased by 9.39% and 22.89%, respectively. SEM examination showed that the surface of the magnetic dental attachment was corroded after being immersed in both types of mineral water and in both groups of immersion times.Conclusion: Immersing the magnetic dental attachment in the mineral water with different pH level decreased the magnetic attraction force as well as corroded the surface of magnetic dental attachment.
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Chen, Yong, Jiankang Wen, Yongsheng Song, Wenjuan Li, Shuang Liu, and Ying Liu. "Mineralogical Characteristics of Pegmatite Tailings and Beneficiation Assessment of Pollucite in Recovering Cesium." Minerals 12, no. 5 (2022): 541. http://dx.doi.org/10.3390/min12050541.
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The technological mineralogical characteristics of cesium-containing minerals in tailings were examined by means of chemical analysis, the energy spectrum analysis method, and MLA (mineral liberation analyzer) to determine the element content, phase analysis, associated mineral components, degree of liberation, particle size, etc. The results showed that the samples mainly contained spodumene, quartz, feldspar, mica, and other minerals. Pollucite was the main cesium-containing mineral in the sample, which had a cesium oxide content that was as high as 34.58%. The mineral content of pollucite in the sample was relatively low—only 1.23%. The pollucite monomer content and the amount of rich intergrowth was 85.25%, and the metal distribution of cesium in the +0.074 mm sample was as high as 87.06%. Spodumene was the main mineral associated with pollucite. The beneficiation evaluation of this tailing sample was conducted using a combined process that integrated desliming, magnetic separation, and froth flotation, and a pollucite concentrate containing 4.45% Cs2O was obtained with a 63.71 recovery rate. This indicates that little pollucite was removed by means of desliming and magnetic separation before froth flotation recovery, but during the froth flotation stage in spodumene and feldspar, a large pollucite loss was observed. Therefore, to improve pollucite recovery, a pollucite-specific adsorption reagent should be synthesized.