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Journal articles on the topic 'Mineralogical and Petrological'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Kamber, Balz S., and Emma L. Tomlinson. "Petrological, mineralogical and geochemical peculiarities of Archaean cratons." Chemical Geology 511 (April 2019): 123–51. http://dx.doi.org/10.1016/j.chemgeo.2019.02.011.

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Bhukte, Pravin, Gopal Daware, Tejas Bhosale, Bhargavi Kulkarni, and Anupam Agnihotri. "Petrological Characteristics of Lateritic Bauxite Deposits of India and Their Significance in Mineral Processing." Journal of Geosciences Research 9, no. 2 (2024): 73–84. http://dx.doi.org/10.56153/g19088-024-0197-59.

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India is endowed with 3896 million tons of bauxite resources and ranking it fifth globally. The bauxite comprises various minerals such as gibbsite, boehmite, diaspore, hematite, goethite, kaolinite, quartz, anatase and rutile. India possesses abundant lateritic bauxite resources originating from parent rocks like Khondalite, Deccan trap basalt, Granite Gneiss, Sandstone, etc., each exhibiting its specific characteristics. The geotechnological evaluation of India's lateritic bauxite deposits, conducted by Jawaharlal Nehru Aluminium Research Development and Design Centre (JNARDDC), revealed the

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Zussman, J. "Minerals and the electron microscope." Mineralogical Magazine 51, no. 359 (1987): 129–38. http://dx.doi.org/10.1180/minmag.1987.051.359.14.

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AbstractThe transmission electron microscope is now used in a great variety of mineralogical and petrological contexts, The development of such applications over the past thirty years is illustrated by reference mainly to studies on serpentine and amphibole minerals.

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SELİM, HAMİT HALUK, AYKUT GÜÇTEKİN, FERHAN ŞAHİN, et al. "Mineralogical, petrological, and geochemical characteristics of Şenkaya Chrysoprase,Turkey." Turkish Journal of Earth Sciences 31, no. 2 (2022): 193–207. http://dx.doi.org/10.55730/1300-0985.1762.

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W., Minyo,, Alabi, O., Adewuyi, B., and Ola-Omole, O. "Chemical, Mineralogical, and Grindability Studies of Anka-Brabra Copper Ore." Advanced Journal of Science, Technology and Engineering 4, no. 2 (2024): 47–63. http://dx.doi.org/10.52589/ajste-y9ttlivr.

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This study examined the chemical characteristics, mineralogy, and grindability of copper ore from Anka-Brabra, Zamfara State, Nigeria. The ore was crushed, ground, and mixed to achieve a uniform sample. The ore sample was characterised using EDX-XRF, XRD, SEM, and petrological microscope. Grindability and fractional sieve analysis techniques were used to ascertain optimal grinding size through particle size distribution and the liberation size of the mineral. Results showed the main copper mineral was malachite (Cu2(CO3)(OH)2) with traces of other minerals. Analysis indicated a copper content

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Szakmány, György, Kristóf Fehér, Zsolt Kasztovszky, and Tamás Sági. "Archaeometric analyses of adze-blades on Nuku Hiva, Marquesas Islands." Archeometriai Műhely 18, no. 1 (2021): 75–88. http://dx.doi.org/10.55023/issn.1786-271x.2021-005.

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In this paper we present our results based on detailed archaeometric (mineralogical, petrological and geochemical) investigations on two flakes, originated from Nuku Hiva, Vaitehii I and Ha’ahinani sites. The main aim of these researches was to determine and characterise the raw material of the stone tools and determine or at least outline their provenances. Based on the mineralogical composition and texture the flake origined from Vaitehii I are basalt and it is very similar to the local Tekao type tholeiitic basalt. On the contrary the raw materials of the flake origined from Ha’ahinani is p

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Pratesi, Giovanni, and Annarita Franza. "Mineralogical, petrological and planetological heritage. The (Italian) story so far." Rendiconti Lincei. Scienze Fisiche e Naturali 32, no. 1 (2021): 95–116. http://dx.doi.org/10.1007/s12210-020-00970-2.

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AbstractThe goal of this work is to further increase the use, by all the stakeholders, of well-established and official cataloguing methods for the preservation, valorisation and study of naturalistic heritage. The work describes the standards of the Central Institute for Cataloguing and Documentation (ICCD) for cataloguing the Italian mineralogical, petrological and planetological heritage to the community of scientists, curators and museum practitioners. This work then provides an overview of the geoscientific heritage already catalogued through these standards and freely available for study

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Dogan-Kulahci, Gullu Deniz, Abidin Temel, and Alain Gourgaud. "Mineralogical and petrological features of the Cemilköy ignimbrite, Cappadocia, Turkey." Geochemistry 78, no. 1 (2018): 103–15. http://dx.doi.org/10.1016/j.chemer.2017.11.002.

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Tomeoka, Kazushige. "Aqueous Alteration in Hydrated Interplanetary Dust Particles." International Astronomical Union Colloquium 126 (1991): 71–78. http://dx.doi.org/10.1017/s0252921100066501.

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AbstractInterplanetary dust particles (IDPs) characterized by chondritic composition can be divided into two principal groups, anhydrous and hydrated. This paper summarizes recent results of mineralogical and petrological studies dealing with the IDPs of hydrated type. Studies on mineralogical characteristics, infrared absorption spectra, and isotopic properties of the hydrated particles have suggested that they are primitive and may contain surviving interstellar material. The hydrated IDPs consist in major part of layer silicates and resemble CI and CM carbonaceous chondrites. Mineralogical

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ZINCHUK, Nikolay. "The role of petrological, mineralogical and geochemical studies in assessing the potential diamond grade of kimberlite." Domestic geology, no. 1 (March 21, 2022): 59–70. http://dx.doi.org/10.47765/0869-7175-2022-10004.

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The focus of this study is the determination of petrological and mineralogical characteristics of kimberlite pipes with various productivity. Here we provided some examples of the appraisal of the initial substrate evolution and reconstructions of mantle sections that allowed us to suggest a possible zonation of lithosphere mantle of a kimberlite province and its diamondiferous territories.

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Nyein, Thida Moe, Maung Hla Khin, and Cherry Win Nway. "Petrological Studies of Igneous Rocks Exposed in the Ka Dai Dutt Area, Kyaikhto Township, Mon State." Bago University Research Journal Vol.10, No.1, no. 2020 (2020): 365–70. https://doi.org/10.5281/zenodo.3924938.

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The research area located in the western part of Kyaikhtiyo area, Kyaikhto Township, Mon State. It lies between Latitude 17˚ 25' to 17˚ 30' N and Longitude 96˚ 59' to 97˚ 4' E in one inch topographic map index of 94 C/15 and 94 G/3. The igneous rocks in the area consist of alkalifeldspar granite, biotite granite, slightly foliated biotite granite and porphyritic biotite granite. Alkalifeldspar, quartz, plagioclase and biotite are chief components and muscovite, chlorite and sericite are accessory minerals. These granitic rocks are regarded as S-type according to the mineralogic

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Maru, A. "A Petrological and Mineralogical Consideration on Unusual Cracking of Concrete Structures." Concrete Journal 42, no. 12 (2004): 32–42. http://dx.doi.org/10.3151/coj1975.42.12_32.

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Dubyna, O. V., S. G. Kryvdik, and O. A. Vyshnevskyi. "MINERALOGICAL AND PETROLOGICAL PECULIARITIES OF GRORUDITES OF EASTERN AZOV AREA (UKRAINE)." Mineralogical Journal 42, no. 1 (2020): 49–65. http://dx.doi.org/10.15407/mineraljournal.42.01.049.

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Yeap, Ee Beng. "The mineralogical and petrological factors in Alkali Silica Reactions in concrete." Bulletin of the Geological Society of Malaysia 31 (July 30, 1992): 1–20. http://dx.doi.org/10.7186/bgsm31199201.

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Im, Ji-Hyeon, Chang-Oh Choo, and Yun-Deuk Jang. "Petrological and Mineralogical Characteristics of Matrix of Pumice in Ulleung Island." Journal of the Mineralogical Society of Korea 24, no. 3 (2011): 151–64. http://dx.doi.org/10.9727/jmsk.2011.24.3.151.

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Schapira, Jessica Shaye, Robert Bolhar, Sharad Master, and Allan H. Wilson. "Mineralogical, Petrological and Geochemical Characterisation of Chrysotile, Amosite and Crocidolite Asbestos Mine Waste from Southern Africa in Context of Risk Assessment and Rehabilitation." Minerals 13, no. 10 (2023): 1352. http://dx.doi.org/10.3390/min13101352.

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Derelict asbestos mine sites in South Africa pose a considerable risk to human, environmental and socio-economic health. Comprehensive mineralogical and geochemical datasets for the existing hazardous geological materials still exposed in Southern African derelict asbestos mines remain largely non-existent, as very little published and up-to-date literature is available. In this study, three representative types of asbestos mineral fibres from derelict asbestos mines in Southern Africa, namely chrysotile from Havelock mine, amosite from Penge mine and crocidolite from Prieska mine, are charact

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Zawadzki, Dominik, Łukasz Maciąg, Iker Blasco, et al. "Geochemistry and Mineralogy of Ferromanganese Crusts from the Western Cocos-Nazca Spreading Centre, Pacific." Minerals 12, no. 5 (2022): 538. http://dx.doi.org/10.3390/min12050538.

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Late Pleistocene–Holocene rocks from the western part of Cocos-Nazca Spreading Centre (C-NSC) include ferromanganese crusts that elucidate the geochemistry and mineralogy of a deep-sea geological setting. Six representative Fe-Mn crust samples were studied using petrological methods, such as optical transmitted light microscopy, energy dispersive X-ray fluorescence spectrometry, inductively coupled plasma mass spectrometry, bulk X-ray diffraction, scanning electron microscopy and electron probe microanalysis. Geochemical, mineralogical and petrological signatures indicate complex formation inf

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Márkus, Izabella Rebeka, and Ádám Rácz. "Investigation of the Petrological Properties of Andesites from Tállya Quarry, Hungary and Their Influence on the Resistance to Wear and Fragmentation." Geosciences and Engineering 10, no. 15 (2022): 125–37. http://dx.doi.org/10.33030/geosciences.2022.15.125.

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The two most common used mechanical test in the aggregate industry for quality control are the resistance to wear (micro-Deval) and resistance to fragmentation (Los Angeles) tests. The quality of aggregates strongly depends on the textural, structural, and mineralogical features of the crushed material. These rock properties were experimentally studied on andesite samples from Tállya quarry. The mineralogical and chemical composition of samples were determined, textural observations were made on thin sections. The alteration was quantified using the chemical composition and mineralogical data.

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Satish-Kumar, M., and Naoyuk Niimi. "Fluorine-rich Clinohumite from Ambasamudram Marbles, Southern India: Mineralogical and Preliminary FTIR Spectroscopic Characterization." Mineralogical Magazine 62, no. 04 (1998): 509–19. http://dx.doi.org/10.1180/002646198547882.

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AbstractHumite group minerals occur in the marbles of granulite grade at Ambasamudram, southern India. Detailed mineralogical and mineral chemical characterization indicate the mineral is a flourine-rich titanian-poor variety of clinohumite. AverageMTi/Si values of 2.22 with typical XRD pattern indicate the mineral to be clinohumite. Petrological constraints on the clinohumite formation shows a high temperature (&gt;700°C) and lowaco2during its formation. The fluorine content of these clinohumites is the highest reported in any environment, with F/(F+OH) ratio reaching a value of 0.70. The

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Yi, Eung Seok, Kyeong Ja Kim, Christian Wöhler, Alexey A. Berezhnoy, Yong Ha Kim, and Seulgi Moon. "Petrological and Mineralogical Characteristics of Exposed Materials on the Floors of the Lavoisier and Surrounding Craters." Remote Sensing 14, no. 17 (2022): 4313. http://dx.doi.org/10.3390/rs14174313.

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Five floor-fractured craters (FFCs), Lavoisier crater and four craters surrounding it (Lavoisier C, Lavoisier E, Lavoisier F, and Lavoisier H), are distributed along the boundary between the northwestern part of the Oceanus Procellarum and the highlands. This study examines the uplifted or exposed materials on the fractured floors of these five impact craters using petrological, mineralogical, and morphological analyses. We inferred the processes that uplifted or exposed the materials from the subsurface to the crater floor using the Chandrayaan-1 Moon Mineralogy Mapper (M3) level 1b (thermall

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Ponomarenko, Aleksandr N., Stepan G. Kryvdik, and Aleksandr V. Grinchenko. "Alkaline rocks of the Ukrainian Shield: Some mineralogical, petrological and geochemical features." Mineralogia 44, no. 3-4 (2013): 115–24. http://dx.doi.org/10.2478/mipo-2013-0008.

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AbstractThe Ukrainian Shield (USh) is a typical province of Proterozoic alkaline magmatism where about 50 massifs and occurrences of alkaline rocks and carbonatites have been found. In spite of the wide distribution of Devonian basaltic- and alkaline magmatic rocks in the Dnieper-Donetsk depression adjacent to the USh, and in a marginal zone of the USh adjacent to folded Donbass, only alkaline rocks of Proterozoic age (1.8-2.1 Ga) that have been identified in the central interior of the USh. Some discrete bodies of 2.8 Ga subalkaline rocks also occur in Bogdanivka massif (Azov area). Occurrenc

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22

Bardintzeff, J. M., B. Bonin, and G. Rasamimanana. "The Cretaceous morondava volcanic province (West Madagascar): mineralogical, petrological and geochemical aspects." Journal of African Earth Sciences 32, no. 2 (2001): 299–316. http://dx.doi.org/10.1016/s0899-5362(01)90008-9.

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23

Elwan, Waheed, Ahmed Dardier, Mohamed Shehata, Emad Khalil, Hader Sobhy, and Fares Khedr. "Petrological and mineralogical characterization of Wadi Ghadir pegmatite, southern Eastern Desert, Egypt." Frontiers in Scientific Research and Technology 6, no. 1 (2023): 0. http://dx.doi.org/10.21608/fsrt.2023.221514.1096.

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Shumilova, T. G., N. S. Kovalchuk, and B. A. Makeev. "Geochemical features of diamond-bearing suevites of the Kara astrobleme (Pay-Khoy)." Доклады Академии наук 486, no. 2 (2019): 233–36. http://dx.doi.org/10.31857/s0869-56524862233-236.

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Results of geochemical studies of suevites of the Kara astrobleme (Pay-Khoy) produced by a new approach based on square microprobe analysis of suevite matrix and consolidated impact melts with multivariate statistics have been described for the first time. At list three suevite varieties have been divided which are essentially differ by geomorphological, mineralogical, petrological and geochemical criteria. The protoliths of the initial rocks of the target for the suevite varieties have been supposed on the basis of a complex analysis.

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Illuminati, Giuseppe, Silvia Musetti, Fabio Bellatreccia, et al. "Chrysoberyl from the Sabatini Volcanic Complex (Latium, Italy): chemical and petrological peculiarities." European Journal of Mineralogy 37, no. 4 (2025): 483–504. https://doi.org/10.5194/ejm-37-483-2025.

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Abstract. This paper describes mineralogical, chemical, and petrological features of an iron-rich chrysoberyl, containing up to 0.31 Fe atoms per formula unit (up to 17.24 wt % as Fe2O3), found in some rare volcanic ejecta of the Sabatini Volcanic Complex in central Italy. These rocks, locally named “sanidinites”, are ultrapotassic and undersaturated in silica, and they are well known for their abundance of HFSE-LILE-REE-rich well-crystallized minerals (HFSE: high‐field-strength element; LILE: large‐ion lithophile element; REE: rare earth element). Chrysoberyl occurs as yellow to brown crystal

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Rejšek, K., M. Mišič, and F. Eichler. " Sustainable forestry and iron compounds in karstic soils: qualitative and semi-quantitative results focused on the occurrence of Fe-compounds on mineral particles." Journal of Forest Science 58, No. 9 (2012): 410–24. http://dx.doi.org/10.17221/106/2011-jfs.

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Relic karstic soils in nine localities in the Dinaric Karst in Slovenia, five localities in the Moravian Karst and four localities in the Bohemian Karst were sampled for soil scientific, mineralogical and petrological studies focused on the presentation of descriptive aspects of particular iron compounds. The macroscopy and microscopy of Fe<sup>2+</sup> and Fe<sup>3+ </sup>compounds were determined and an interpretation of these data was performed aimed at describing sources and their palaeotransports. The presented results show that the studied karstic soils have a het

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KRYVDIK, S. G., O. V. DUBYNA, and P. F. YAKUBENKO. "Petrological Features of Korsun'-Novomyrhorod Anorthosite-Rapakivi Granite Pluton." Mineralogical Journal 43, no. 4 (2021): 25–49. http://dx.doi.org/10.15407/mineraljournal.43.04.025.

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The Korsun’-Novomyrhorod pluton is the second after the Korosten one in terms of the scale of Proterozoic (1757-1748 Ma) anorthosite-rapakivi-granite magmatism in the Ukrainian Shield. According to geochronological data, pluton was formed as a result of multiple ascending and crystallization of basic to acidic melts. Differentiation of initial melts because to be responsible for gabbro-anorthosite and monzonites series crystallization. Whereas rapakivi granites, which are predominate in the modern erosion level, were formed from felsic magma not directly related with differentiation of basic m

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Akinmosin, A., and O.O Osinowo. "GEOCHEMICAL AND MINERALOGICAL COMPOSITION OF ISHARA SANDSTONE DEPOSIT, SOUTH WESTERN NIGERIA." Continental J. Earth Sciences 3 (July 7, 2008): 33–39. https://doi.org/10.5281/zenodo.824300.

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A total number of eleven [11] sandstone samples were collected at Ishara Remo in Ogun state in order to classify the deposit of the Ise Formation asexposed in this area on the bases of its chemical and mineralogical make-up. Out of these, nine [9] samples were selected for both geochemical andpetrographic studies. Relative concentration of the major oxide groups – silica and alumina alkali oxides, iron oxide and magnesia has been used to classify the deposit. The result of the geochemical analysis on the selected samples shows that the classification agrees with parameters of log SiO<sub>2</su

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Nash, David J., T. Jake R. Ciborowski, Timothy Darvill, et al. "Petrological and geochemical characterisation of the sarsen stones at Stonehenge." PLOS ONE 16, no. 8 (2021): e0254760. http://dx.doi.org/10.1371/journal.pone.0254760.

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Little is known of the properties of the sarsen stones (or silcretes) that comprise the main architecture of Stonehenge. The only studies of rock struck from the monument date from the 19th century, while 20th century investigations have focussed on excavated debris without demonstrating a link to specific megaliths. Here, we present the first comprehensive analysis of sarsen samples taken directly from a Stonehenge megalith (Stone 58, in the centrally placed trilithon horseshoe). We apply state-of-the-art petrographic, mineralogical and geochemical techniques to two cores drilled from the sto

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Tosi, Amanda A., Maria Elizabeth Zucolotto, Wania Wolff, et al. "The classification of Parauapebas Meteorite: Petrological, mineralogical and elemental compositions and physical properties." Planetary and Space Science 203 (September 2021): 105250. http://dx.doi.org/10.1016/j.pss.2021.105250.

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Rameshwar Rao, D., B. L. Narayana, and S. N. Charan. "Mineralogical and Petrological Studies of Gneisses and Charnockites of Dharmapuri District, Tamil Nadu." Journal Geological Society of India 35, no. 1 (1990): 55–69. http://dx.doi.org/10.17491/jgsi/1990/350110.

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Abstract Detailed mineralogical studies of amphibolite to granulite facies transition zone rocks and granulite facies rocks in Dharmapuri district, Tamil Nadu, were carried out in order to know the gneiss-charnockite relations, nature of protolith, and metamorphic conditions. The studies show that the rocks are of magmatic origin. and show a gradual decrease in modal composition of hornblende and biotite and gradual increase of hypersthene and iron oxide in a north to south traverse. Breakdown of hydrous minerals to anhydrous minerals is evident with the release of iron oxide suggesting progre

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Niu, XiaoLu, JingSui Yang, Fei Liu, HongYu Zhang, and MingChun Yang. "Origin of Baotoudong syenites in North China Craton: Petrological, mineralogical and geochemical evidence." Science China Earth Sciences 59, no. 1 (2015): 95–110. http://dx.doi.org/10.1007/s11430-015-5216-1.

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Thomas, D. G., F. Asuke, S. A. Yaro, and S. M. Adams. "Chemical, mineralogical and petrological characterization of Gyaza iron ore deposit, Katsina State, Nigeria." Nigerian Journal of Technology 38, no. 3 (2019): 660. http://dx.doi.org/10.4314/njt.v38i3.17.

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Hama, K., K. Amano, R. Metcalfe, et al. "Mineralogical and petrological evidence for the hydrogeological characteristics of the Tsukiyoshi Fault, Japan." Quarterly Journal of Engineering Geology and Hydrogeology 35, no. 2 (2002): 189–202. http://dx.doi.org/10.1144/1470-923600-27.

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Kónya, Péter, Ferenc Mádai, and Sándor Szakáll. "Mineralogical and petrological investigation of distinct petrophysical parameters of basalt samples from Uzsa." Epitoanyag - Journal of Silicate Based and Composite Materials 61, no. 1 (2009): 14–20. http://dx.doi.org/10.14382/epitoanyag-jsbcm.2009.4.

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Morbidelli, L., C. B. Gomes, L. Beccaluva, et al. "Mineralogical, petrological and geochemical aspects of alkaline and alkaline-carbonatite associations from Brazil." Earth-Science Reviews 39, no. 3-4 (1995): 135–68. http://dx.doi.org/10.1016/0012-8252(95)00031-3.

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Koeberl, Christian, Gero Kurat, and Franz Brandstätter. "MAC88105—A regolith breccia from the lunar highlands: Mineralogical, petrological, and geochemical studies." Geochimica et Cosmochimica Acta 55, no. 11 (1991): 3073–87. http://dx.doi.org/10.1016/0016-7037(91)90474-j.

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Lu, Yunfei, Jingchun Tian, Qingshao Liang, and Xiaobing Lin. "Geological Characteristics and Paleoenvironmental Evolution of Fine-Grained Sediments in the Third Member of the Xujiahe Formation in the Western Sichuan Depression, SW China." Minerals 13, no. 4 (2023): 510. http://dx.doi.org/10.3390/min13040510.

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This study investigated, in detail, the characteristics of the Late Triassic fine-grained sediments in the third member of the Xujiahe Formation (Xu-3 Member), in the Western Sichuan Depression, and the paleoenvironmental evolution during their deposition through petrological interpretation, mineralogical composition characterization, and element geochemical analysis. According to the mineralogical composition, the Xu-3 Member can be divided into two petrological types, namely clayey fine-grained felsic sedimentary rocks and lime fine-grained felsic sedimentary rocks. The main mineral componen

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Gatsenko, V. O., and S. I. Kurylo. "Kaersutitis in Azov Area Rocks (Ukrainian Shield): Petrological Aspect." Geochemistry and ore formation, no. 42 (2021): 48–60. http://dx.doi.org/10.15407/gof.2021.42.048.

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The paper presents the results of new studies of kaersutites from lamprophyres of the Pokrovo-Kyriivo massif (PKM) of the Azov area (Ukrainian Shield). The comparison of mineralogical-petrographic and chemical features of kaersutites of lamprophyres with those of other dyke (microgabroid) and plutonic (pyroxenite) rocks of PKM is carried out and also, with this mineral from the camptonites of the Khlibodar quarry and the pyroxenites of the Chomutov massif. The paper presents the results of new studies of kaersutites from lamprophyres of the Pokrovo-Kyriivo massif (PKM) of the Azov area (Ukrain

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B. Akinnodi, Omowunmi, Oladunni O. Alabi, Fatai O. Aramide, and Yemisi E. Gbadamosi. "Chemical and Mineralogical Characterization of Isanlu-Isin Columbite for Effective Beneficiation Towards Niobium Pentoxide Recovery." NanoNEXT 6, no. 2 (2025): 6–13. https://doi.org/10.54392/nnxt2522.

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The characterization of Isanlu-Isin columbite was conducted to obtain data suitable for its beneficiation to metallurgical grade. Samples from various locations within the mining site underwent homogenization, crushing, and grinding for characterization. Chemical analysis was performed using Energy Dispersive X-ray Fluorescence Spectroscopy (ED-XRF), while mineralogical analysis employed a Scanning Electron Microscope with Energy Dispersive Spectroscopy (SEM-EDS), X-ray Diffraction (XRD), and petrological examination. ED-XRF results revealed that the crude samples contain 10.070% Nb₂O₅, along

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Dr., S. Radhakrishna. "SYNTHESIS OF CHIGARGUNTA GOLD MINES – ANDHRA PRADESH." International Journal of Advances in Engineering & Scientific Research 1, no. 7 (2014): 32–34. https://doi.org/10.5281/zenodo.10725326.

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<strong>Abstract:</strong>   The Chigargunta gold mine is the southern extension of the Kolar  gold fields and is situated in the Chittor district of Andhra Pradesh, Southern India. The rock types encountered in the area include peninsular gneiss, amphibolites, champion gneiss, dykes pegmatites and quartzites. This study was made based on hundred thin sections and twenty five ore mounts that were prepared out of all the rock types collected and a few of chemical analyses in order to know the mineralogical, petrological, petrochemical paragenesis and the nature of metamorphism of rock

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Li, Haoran, Fengyue Sun, Liang Li, and Jiaming Yan. "The Hudesheng mafic–ultramafic intrusions in the Oulongbuluke Block, Qinghai Province, NW China: chronology, geochemistry, isotopic systematics and tectonic implications." Geological Magazine 156, no. 9 (2018): 1527–46. http://dx.doi.org/10.1017/s0016756818000778.

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AbstractThe Hudesheng mafic–ultramafic intrusions are located in the Oulongbuluke Block, north of the Qaidam Block in Qinghai Province, NW China. We carried out a detailed study of the intrusions, including field observations, petrology, zircon U–Pb geochronology, Lu–Hf isotopes, bulk-rock major- and trace-element geochemistry, and mineral compositions, to provide a better understanding of their properties and the regional tectonic evolution. Zircon U–Pb dating on gabbro and pyroxenite samples yielded ages of 465 and 455 Ma, respectively. Geochemical data, in conjunction with the field observa

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SEMENENKO, V. P., A. L. GIRICH, K. O. SHKURENKO, and N. V. KYCHAN. "Macrochondrules in Some Chondrites: 1. Structural-Mineralogical Characteristics." Mineralogical journal 43, no. 2 (2021): 29–39. http://dx.doi.org/10.15407/mineraljournal.43.02.029.

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The results of structural, mineralogical and chemical study of rare structural units of chondrites, macrochondrules and their fragments, found in five chondrites of different chemical groups and petrological types (Allende CV3, Krymka LL3.1, Saratov L4, "Velyka Balka" L4-5, Château-Renard L6), are given. Most of them are generally similar to ordinary chondrules and previously studied macrochondrules. They have a radial and porphyritic texture, consist of olivine and pyroxene, and are covered by a silicate rim, which is fine-grained in the macrochondrules of unequilibrated chondrites and coarse

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Nastavko, A. V., E. V. Borodina, and A. E. Izokh. "Petrological and mineralogical features of volcanic rocks from the central Kuznetsk Basin (southern Siberia)." Russian Geology and Geophysics 53, no. 4 (2012): 334–46. http://dx.doi.org/10.1016/j.rgg.2012.02.010.

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Xie, Lei, Rucheng Wang, Xiaoming Chen, Jiansheng Qiu, and Dezi Wang. "Th-rich zircon from peralka line A-type granite: Mineralogical features and petrological implications." Chinese Science Bulletin 50, no. 8 (2005): 809–17. http://dx.doi.org/10.1007/bf03183683.

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Ribeiro, J., E. Ferreira da Silva, and D. Flores. "Burning of coal waste piles from Douro Coalfield (Portugal): Petrological, geochemical and mineralogical characterization." International Journal of Coal Geology 81, no. 4 (2010): 359–72. http://dx.doi.org/10.1016/j.coal.2009.10.005.

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Liritzis, I., C. Sideris, A. Vafiadou, and J. Mitsis. "Mineralogical, petrological and radioactivity aspects of some building material from Egyptian Old Kingdom monuments." Journal of Cultural Heritage 9, no. 1 (2008): 1–13. http://dx.doi.org/10.1016/j.culher.2007.03.009.

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Flannery, B. "Next generation mineral photography - the case and guide for taking 360-degree spin photographs." Geological Curator 10, no. 8 (2017): 469–72. http://dx.doi.org/10.55468/gc251.

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This article presents a workflow and guide on how to take "360 degree" photographs of mineral specimens whereby the specimen is rotated on a turntable and numerous still photographs of are taken of the specimen. Digital post-processing facilitates the creation of interactive photographs that can be viewed online in a web browser whereby the mineral specimen can be manipulated and rotated at will. Whilst the focus of this article is mineralogical specimens, it is equally applicable to petrological and fossil specimens. A brief discussion on the merits and need for such photographs is also given

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Subba Rao, D. V., S. Nirmal Charan, B. L. Narayana, and S. M. Naqvi. "Symplectites in High-Grade Pelitic Gneisses of Usilampatti, Tamil Nadu: P-T Conditions and Geochemistry." Journal Geological Society of India 46, no. 1 (1995): 37–45. http://dx.doi.org/10.17491/jgsi/1995/460104.

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Abstract Occurrence of fine-grained, fingerprint-like symplectic intergrowths of cordierite, K-feldspar and quartz formed due to the retrogressive, garnet breakdown reactions following decompression during uplift, is reported here from metapelites of Usilampatti area. These metapelites consisting of cordierite, garnet, hypersthene, biotite, hercynitic spinel, sillimanite, K-feldspar assemblage were metamorphosed at 6.5-7.5 Kb and 750-800°C. The symplectites were formed at 600-670°C and 5 Kb pressure. The textural and mineralogical evolutions in these metapelites indicate a rapid decompressiona

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Bartier, D., M. Buatier, M. Lopez, J. L. Potdevin, H. Chamley, and J. Arostegui. "Lithological control on the occurrence of chlorite in the diagenetic Wealden complex of the Bilbao anticlinorium (Basco-Cantabrian Basin, Northern Spain)." Clay Minerals 33, no. 2 (1998): 317–32. http://dx.doi.org/10.1180/000985598545507.

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AbstractSandstones and shales from the southern flank of the Bilbao anticline in the Gordexola and Orozko valleys, northwestern Spain, have been subjected to a detailed sedimentological, mineralogical and geochemical study. They are composed of proximal frontdeltaic sandbars interbedded with silty-clayey sediments and correspond to a prograding sequence of a deltaic system. The clay mineral assemblages of doublets of sandstones and shales are composed mainly of illite, chlorite and illite-smectite mixed-layers R3 (ISII). The clay diagenesis consists of the transformation of smectite and I-S mi

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