Journal articles: 'Potential deposits'

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Kontorovich, A. E., V. A. Kashirtsev, V. I. Moskvin, L. M. Burshtein, T. I. Zemskaya, E. A. Kostyreva, G. V. Kalmychkov, and O. M. Khlystov. "Petroleum potential of Baikal deposits." Russian Geology and Geophysics 48, no. 12 (December 2007): 1046–53. http://dx.doi.org/10.1016/j.rgg.2007.11.004.

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Yu, Fan, Qihai Shu, Xudong Niu, Kai Xing, Linlong Li, David R. Lentz, Qingwen Zeng, and Wenjie Yang. "Composition of Garnet from the Xianghualing Skarn Sn Deposit, South China: Its Petrogenetic Significance and Exploration Potential." Minerals 10, no. 5 (May 18, 2020): 456. http://dx.doi.org/10.3390/min10050456.

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The Xianghualing skarn Sn deposit in the southwestern part of the southern Hunan Metallogenic Belt is a large Sn deposit in the Nanling area. In this paper, the garnet has been analyzed by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) to obtain the concentrations of the major and trace elements. The results reveal that the garnets from the Xianghualing deposit mainly belong to andradite-grossular (grandite) solid solution and are typically richer in Al than in Fe. They show enrichment in heavy rare earth elements (HREEs) and notably lower light rare earth elements (LREEs), and commonly negative Eu anomalies, indicative of a relatively reduced formation environment. The garnets have high Sn concentrations between 2313 ppm and 5766 ppm. It is also evident that there is a positive correlation between Sn and Fe, suggesting that Sn4+ substitutes into the garnets through substituting for Fe3+ in the octahedral position. Combined with previous studies, it can be recognized that the Sn concentrations of garnet in skarn Sn deposits are generally high, whereas the W concentrations are relatively low. This is just the opposite in garnets from skarn W deposits that typically have high W, but low Sn concentrations. In polymetallic skarn deposits with both economic Sn and W, the concentrations of both metals in garnets are relatively high, although varying greatly. Therefore, the Sn and W concentrations in garnets can be used to evaluate a skarn deposit’s potential to produce Sn and (or) W mineralization, which is helpful in exploration.

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Mulanto, Tri. "Perilaku Konsumsi Upaya Meningkatkan Potensi Produk Deposito di Bank Syariah." Intizar 22, no. 2 (December 24, 2016): 333. http://dx.doi.org/10.19109/intizar.v22i2.945.

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Perbankan syari’ah saat ini telah memiliki payung hukum yang kuat dengan hadirnya undang-undang nomor 21 tahun 2008 tentang perbankan syari’ah. Hal ini sangat berpengaruh terhadap eksistensi dari perbankan syari’ah yang semakin diminati oleh banyak kalangan.Bank syari’ah membutuhkan dana dalam menjalankan produk pembiayaannya. Deposito merupakan salah satu produk penghimpunan di bank syariah. Deposito di bank syariah terus mengalami pertumbuhan. Walaupun demikian bank syariah tetap harus meningkatkan produk deposito, untuk mencapai market share 5 persen. Untuk meningkatkan volume deposito bank syariah perlu memahami bentuk perilaku konsumsi masyarakat. Dari data yang ada kontribusi dana pihak ketiga bank syariah diberikan oleh produk deposito sebesar 71,15 persen.Penulisan ini menggunakan jenis deskriptif kualitatif, Batasan dalam tulisan ini difokuskan pada produk deposito di bank syari’ah perilaku konsumen.Tulisan ini menggunakan studi pustaka kajian dari berbagai sumber. Hasil dari tulisan ini bahwa deposito di bank syariah terus mengalami perkembangan, pada tahun 2015 pertumbuhan deposito di bank syariah mencapai 4,12 persen. Perilaku konsumsi memiliki banyak faktor dan bisa memberi pengaruh terhadap peningkatan produk deposito di bank syariah. Sehingga bank syariah perlu memahami perilaku konsumsi masyarakat dalam upaya meningkatkan potensi pengembangan produk deposito di bank syariah.potensi pengembangan produk pembiayaan mudharabah di bank syari’ah masih sangat besar.Potensi pengembangan produk deposito masih sangat besar dan sangat luas.Bank of Shariah now has a solid legal with the presence of the law number 21 in 2008 about Bank of Shariah. This adversely affects the existence of the Shari'ah Bank that increasingly catches interest many people. Bank of Shari'ah requires funds in running financing products. Deposits are ones’ product accumulation in Islamic banks. Deposits in Islamic banks continued to grow. Nevertheless, Islamic banks still have to increase deposit products, to achieve a 5 percent market share. To increase the volume of deposits of Islamic banks need to understand the behaviors of consumption. From the available data the contribution of third party funds provided by the Islamic banks deposits amounted to 71.15 persen. This study uses a descriptive qualitative limitation. This paper is focused on products in Consumers Islamic bank deposits. This study uses literature review of various sources. The results of this paper that the deposits in Islamic banks continued to experienced growth, in 2015 the growth of deposits in Islamic banks reaches 4.12 percent. Consumer behavior has many factors and can give effect to an increase in deposit products in Islamic banks. So that Islamic banks need to understand the behavior of private consumption in order to increase the potential for product development of deposits in Bank of Shariah. The advantage of product development in Islamic bank financing is still enormous. The advantage of deposit product development is still very large and very spacious.

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Korandová, Beáta, Alena Straková, Jiří Beránek, and Dana Vrublová. "The raw material potential of the Czech Republic." Environmental Economics 9, no. 3 (October 8, 2018): 23–27. http://dx.doi.org/10.21511/ee.09(3).2018.03.

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This article summarizes the information on raw materials in the Czech Republic. Although mining was significantly reduced not long ago, there are still rich deposits of ores, non-metallic raw materials, as well as energetic and construction ones. Many of them are potentially utilizable in future, especially those which are economically favorable, and their mining is not in any conflict with environmental interests. Deposits are distributed irregularly, and their raw materials are different in both the Bohemian Massif and Western Carpathians. In order to be complete, the text also comprises deposits, which are restricted by environmental limits or their mining promises a low-cost effectiveness. The article is amended with actual statistical data.

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Hubarieva, Iryna, Olesіa Lebid, and Oleksandra Zuieva. "Determining the priority sources for attracting deposits in the formation of the financial potential of banks." Banks and Bank Systems 12, no. 3 (October 19, 2017): 215–27. http://dx.doi.org/10.21511/bbs.12(3-1).2017.06.

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The attraction of deposits by the banks in Ukraine is the basis for the formation of their resource base, which is an essential component of the banking financial potential. A qualitative formation of the bank’s resource base is carried out through proper management of attracting deposits in terms of their selection and giving preferences to specific sources of resource allocation. That is why the determination of priorities in attracting resources by banks and the formation of appropriate tools is an important tactical task in ensuring the stability of the Ukrainian banking system. The problem of new approaches to the management of deposits was especially acute during the crisis and the reduction of confidence of the population of Ukraine in the banking system, which makes actual the topic of the article and determines the importance of solving the tasks set in it. The goal of the paper is to develop tools for determining priorities of the main sources of attracting deposits by banks taking into account the system of criteria as a prerequisite for optimizing deposit portfolios of banks and the basis for the formation of their financial potential. The article proposes a sequence of stages and the corresponding tools that ensure the determination of priorities of different sources for attracting deposit funds of banks taking into account the criteria of time, minimization of costs and risks, balanced state of terms and volumes, equilibrium of costs and risks, ensuring a qualitative formation and effective use of the financial potential of the bank, ensuring a certain level of development of the bank. The use of the proposed approach made it possible to obtain such estimates that reflect priorities according to the criteria of minimization and equilibrium of risks and costs, a balanced state of terms and volumes and ensuring a specified level of the bank’s development, making it possible to determine the priorities of the main sources of attraction of financial resources for five banks in Ukraine.

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Ivanov, K. S., N. P. Kostrov, and V. A. Koroteev. "On the relationship of geodynamics, heat flow, deep structure and petroleum and gas potential of Yamal." Доклады Академии наук 486, no. 2 (May 27, 2019): 208–11. http://dx.doi.org/10.31857/s0869-56524862208-211.

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Hydrocarbon deposits concentration per unit square in Yamal is more than 100 times greater than the world average. Hydrocarbon deposits are generally located in regions with high modern geodynamic activity. The mantle structure in Yamal area has abnormal features according to seismic tomography. The southern part of Kara sea, Yamal and the western part of Gydan peninsula are situated in a big positive heat flow density anomaly with the epicenter near to Rusanovskoe deposit. Almost all deposits of hydrocarbones in Yamal are situated on the flanks of the West-Siberian rift system and simultaneously in gradient zones of heat flow density.

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7

Price, Gregory N. "The Cost of Government Deposits for Black-Owned Commercial Banks." Review of Black Political Economy 23, no. 1 (June 1994): 9–24. http://dx.doi.org/10.1007/bf02895738.

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This article utilizes a Statistical Cost Accounting Model and Mean Variance Model to estimate the cost and potential risk impact of government deposits for black-owned commercial banks. The main findings are that relative to other types of deposits on the balance sheet, government deposits are expensive, and that deposits received through the Minority Bank Deposit Program may have the effect of increasing risk in the asset portfolio.

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Pak, Sang-Joon, Inah Seo, Kyeong-Yong Lee, and Kiseong Hyeong. "Rare Earth Elements and Other Critical Metals in Deep Seabed Mineral Deposits: Composition and Implications for Resource Potential." Minerals 9, no. 1 (December 21, 2018): 3. http://dx.doi.org/10.3390/min9010003.

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The critical metal contents of four types of seabed mineral resources, including a deep-sea sediment deposit, are evaluated as potential rare earth element (REE) resources. The deep-sea resources have relatively low total rare earth oxide (TREO) contents, a narrow range of TREO grades (0.049–0.185%), and show characteristics that are consistent with those of land-based ion adsorption REE deposits. The relative REO distributions of the deep-seabed resources are also consistent with those of ion adsorption REE deposits on land. REEs that are not part of a crystal lattice of host minerals within deep-sea mineral deposits are favorable for mining, as there is no requirement for crushing and/or pulverizing during ore processing. Furthermore, low concentrations of Th and U reduce the risk of adverse environmental impacts. Despite the low TREO grades of the deep-seabed mineral deposits, a significant TREO yield from polymetallic nodules and REE-bearing deep-sea sediments from the Korean tenements has been estimated (1 Mt and 8 Mt, respectively). Compared with land-based REE deposits, deep-sea mineral deposits can be considered as low-grade mineral deposits with a large tonnage. The REEs and critical metals from deep-sea mineral deposits are important by-products and co-products of the main commodities (e.g., Co and Ni), and may increase the economic feasibility of their extraction.

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Nogueira, Grínia M., Cassiano Gomes Aimoli, Raquel Farias Weska, Leandro S. Nascimento, and Marisa Masumi Beppu. "In Vitro Calcification of Silk Fibroin Hydrogel." Key Engineering Materials 361-363 (November 2007): 503–6. http://dx.doi.org/10.4028/www.scientific.net/kem.361-363.503.

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Silk fibroin hydrogels were prepared and their potential to deposit calcium phosphates in vitro was observed. Pristine and lyophilized samples were tested in 1xSBF and 1.5xSBF. The results showed that silk fibroin hydrogels can induce calcium phosphate deposits both in the pristine and lyophilized form. However, the pristine silk fibroin hydrogel after calcification presented a fragile structure making it difficult to handle, while the lyophilized samples presented better resistance to handling. Calcium phosphates deposits were intense in samples submitted to tests in 1.5xSBF, however, few and isolated deposits were observed on samples submitted to tests in 1xSBF. The 3-D porous structure and the ability to deposit calcium phosphates, turn silk fibroin hydrogel a potential material suitable to use in biomimetic processes.

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Williams, K. J., S. J. Tait, and R. M. Ashley. "In-sewer sedimentation associated with active flow control." Water Science and Technology 60, no. 1 (July 1, 2009): 55–63. http://dx.doi.org/10.2166/wst.2009.286.

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Active flow control using automated gates and weirs aims to utilise available dispersed storage within sewer systems to alleviate the severity and frequency of localised flooding incidents. Whilst a previous study has demonstrated its potential, a key operational concern before implementation was sedimentation. An experimental programme was designed to investigate the sediment deposition created when using a flow control device. Tests were also undertaken to examine the potential for rapid gate opening to flush away any resulting deposits. In catchments dominated by fine material in suspension, the use of an active flow control device can result in a uniformly thick deposit upstream of the gate. Rapid gate opening results in deposited material eroding in large sections starting at the gate and moving in an upstream direction. Granular sediment forms a series of discrete bedforms which are fairly uniform regardless of the flow conditions and a larger deposit further upstream. The potential for flushing granular deposits is limited and modification of the operation of the gate has shown little potential for increasing the effectiveness. Therefore, active flow control using a single downstream gate may only be suitable in systems with fine material moving in suspension during dry weather flow and not where there is significant granular sediment.

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Huang, C. A., Jhih You Chen, and Ui Wei Leu. "Corrosion Behavior of As-Plated and Annealed Cr-C-Deposited Steels." Key Engineering Materials 724 (December 2016): 12–15. http://dx.doi.org/10.4028/www.scientific.net/kem.724.12.

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The corrosion behavior of Cr-C-deposited steel specimens, which were prepared from the Cr3+-based bath, was investigated in the 0.5 M H2SO4 solution. After electroplating, the deposited specimens were annealed at 300, 450, 600 and 700°C for 1 h. Based on the results of corrosion test, the corrosion resistance of as-plated and annealed Cr-C deposits has strongly related to the surface cracks. However, the corrosion resistance of 450°C-annealed Cr-C deposit could be obviously improved when the deposit was pre-polarized in the passive potential region. Annealed at 700°C, the corrosion resistance of Cr-C deposit is markedly raised owing to formation of Cr oxides on the crack surface during annealing.

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Mars, John C., Gilpin R. Robinson, Jane M. Hammarstrom, Lukas Zürcher, Helen Whitney, Federico Solano, Mark Gettings, and Steve Ludington. "Porphyry Copper Potential of the United States Southern Basin and Range Using ASTER Data Integrated with Geochemical and Geologic Datasets to Assess Potential Near-Surface Deposits in Well-Explored Permissive Tracts." Economic Geology 114, no. 6 (September 1, 2019): 1095–121. http://dx.doi.org/10.5382/econgeo.4675.

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Abstract ArcGIS was used to spatially assess and rank potential porphyry copper deposits using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data together with geochemical and geologic datasets in order to estimate undiscovered deposits in the southern Basin and Range Province in the southwestern United States. The assessment was done using a traditional expert opinion three-part method and a prospectivity model developed using weights of evidence and logistic regression techniques to determine if ASTER data integrated with other geologic datasets can be used to find additional areas of prospectivity in well-explored permissive tracts. ASTER hydrothermal alteration data were expressed as 457 alteration polygons defined from a low-pass filtered alteration density map of combined argillic, phyllic, and propylitic rock units. Sediment stream samples were plotted as map grid data and used as spatial information in ASTER polygons. Gravity and magnetic data were also used to define basins greater than 1 km in depth. Each ASTER alteration polygon was ranked for porphyry copper potential using alteration types, spatial amounts of alteration, stream sediment geochemistry, lithology, polygon shape, proximity to other alteration polygons, and deposit and prospects data. Permissive tracts defined for the assessment in the southern Basin and Range Province include the Laramide Northwest, Laramide Southeast, Jurassic, and Tertiary tracts. Expert opinion estimates using the three-part assessment method resulted in a mean estimate of 17 undiscovered porphyry copper deposits, whereas the prospectivity modeling predicted a mean estimate of nine undiscovered deposits. In the well-explored Laramide Southeast tract, which contains the most deposits and has been explored for over 100 years, an average of 4.3 undiscovered deposits was estimated using ASTER alteration polygon data versus 2.8 undiscovered deposits without ASTER data. The Tertiary tract, which contains the largest number of ASTER alteration polygons not associated with known Tertiary deposits, was predicted to contain the most undiscovered resources in the southern Basin and Range Province.

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W Byrer, Charles, and Hugh D. Guthrie. "CARBON DIOXIDE SEQUESTRATION POTENTIAL IN COAL DEPOSITS." Environmental Geosciences 6, no. 3 (September 1999): 156–57. http://dx.doi.org/10.1046/j.1526-0984.1999.08046-20.x.

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Jakka, Ravi Sankar, Amit Shiuly, and Ranjit Das. "Liquefaction Potential for Kolkata City." International Journal of Geotechnical Earthquake Engineering 4, no. 2 (July 2013): 18–33. http://dx.doi.org/10.4018/ijgee.2013070102.

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This paper presents the liquefaction potential of densely populated Kolkata city, which is situated on the world's largest delta island with very soft and thick alluvial soil deposits. Due to presence of soft alluvium deposits at shallow depths, soil resistance against liquefaction is expected to be less. Additionally, large thickness of soil layers may amplify the ground shaking resulting in high seismic demand on the soil. Here in this study, variation of factor of safety against liquefaction is evaluated with depth at different locations in Kolkota city. The study founds striking results that the Kolkata city soils are less prone to liquefaction even though there is significant ground amplification due to presence of thick soil deposits.

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Motta, João Gabriel, and Ilio Rodarte Faria Júnior. "A mineral potential mapping approach for supergene nickel deposits in southwestern São Francisco Craton, Brazil." Brazilian Journal of Geology 46, no. 2 (June 2016): 261–73. http://dx.doi.org/10.1590/2317-4889201620160021.

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ABSTRACT: Southwestern São Francisco Craton makes limit with Brasília thrust-fold belt and involves rocks from Archean to formed during the Brasiliano-Pan Africano Neoproterozoic event, including a mafic-ultramafic belt (Morro do Ferro Greenstone Belt) hosted along the Archean counterpart. This greenstone belt hosts two-nickel deposits (Morro do Níquel and O'Toole, respectively silicate and sulfide types) and occurrences. This study applies an empirical-conceptual model for lateritic nickel deposits formation into geographic information systems with aerogeophysical data (magnetic and gamma-spectrometry) and digital elevation models (terrain relief and slope). Our contribution aims for nickel deposits favorability mapping using a simple mathematical operator over a supporting spatial database translating the conceptual exploration model into evidential layers for geological processes involved on deposit formation. Evidential layers constructed for identification of elements pertaining the supergene nickel mineral system are given by analytic signal amplitude maps, thorium over potassium ratio images, and digital elevation models and slope maps, derived from shuttle radar topography mission digital elevation models. Evidential layers integration through binary layers algebraic sum identified effectively known deposits and occurrences with its outputs highlighting possibilities for unknown resources in this under-explored terrain.

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Rogizny, Valery, Danila Kulikov, Maria Karpukhina, Alexey Cheremisin, and Vasily Khromov. "Investment appeal assessment of Pt-rich and Cu-Ni deposits of Monchegorsky ore district in current conditions." Ores and metals, no. 1 (May 21, 2021): 42–56. http://dx.doi.org/10.47765/0869-5997-2021-10003.

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Development potential and investment attractiveness of PGM deposits (Monchegorsky ore district) are discussed. By the late 2020, the reserves of these deposits were approved based on results of a feasibility study review assessment in the State Reserve Commission and TsNIGRI approval. In current mineral market conditions (including high Pd price), the most attractive development projects are Vuruchuaivench deposit comprising 4 areas (Plast 300, Vuruchuaivench, Yuzhnosopchinsky and Arvarench), NittisKumuzhya-Travyanaya occurrence and Loipishnyun area. In terms of reserves, ore grades and proximity to processing plants, these potential mining projects are less expensive if developed concurrently. The paper presents recommendations for PGM deposit opening, development and mining using advanced mining equipment in open-pit and underground mining operations, ore conveying and processing plant tailings disposal to infill underground workings. Economic estimates were made supporting development viability of the above deposits within Monchegorsky ore district.

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Thomassen, B. "The gold and base metal potential of the Lower Proterozoic Karrat Group, West Greenland." Rapport Grønlands Geologiske Undersøgelse 155 (January 1, 1992): 57–66. http://dx.doi.org/10.34194/rapggu.v155.8182.

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The mineral potential of the Karrat Group in West Greenland became important after exhaustion in 1990 of the Black Angel lead-zinc mine situated within this supracrustal unit. It consists of shelf and turbidite type metasediments and subordinate metavolcanics deposited in an epicontinental marginal basin. Known mineralization comprises the Black Angel deposit and a number of other marble-hosted lead-zinc occurrences, as well as extensive sulphide facies iron formations and vein type base and precious metals mineralisation in quartzites and metagreywackes. Further areas with anomalously high contents of both base metals and gold-arsenic-tungsten are indicated by drainage geochemistry. The mineral potential of the Karrat Group is for massive base metal sulphide deposits hosted in marbles or clastic metasediments, and turbidite hosted gold-bearing veins and shear zones.

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Gauthier, Michel, and Francis Chartrand. "Metallogeny of the Grenville Province revisited." Canadian Journal of Earth Sciences 42, no. 10 (October 1, 2005): 1719–34. http://dx.doi.org/10.1139/e05-051.

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Four new petrogenetic and metallogenic models are proposed herein to explain the formation of important mineral deposits in the Grenville Province, providing a framework from which to reappraise Grenvillian mineral potential. Recognition of a high-pressure metamorphic belt within the Grenville Province suggests a potential for eclogite-hosted rutile deposits, an important and much-sought commodity. A recently developed Norwegian model proposes that anorthosite genesis occurred through lower crust underplating and coeval partial melting, rather than by plume magmatism. Applied to the Grenville Province, the new petrogenetic model may provide insight into the widespread occurrence of platinum group element (PGE) poor nickel showings and the distribution of chromite, Ti-rich, and low-Ti iron-oxide deposits within the Grenville and adjacent terranes. A new type of sedimentaryexhalative (SEDEX) mineralization formed by oxidized brines has been defined following the discovery of new deposits in Australia. Applied to the Grenville Province, it provides a possible explanation for two long-recognized features of marble-hosted zinc deposits: (i) the presence of meta-siderite beds occurring as distal haloes around SEDEX zinc deposits, and (ii) the mutually exclusive division of these SEDEX deposits into massive sulphide and nonsulphide groups. The discovery of the giant Olympic Dam iron-oxide coppergold (IOCG) deposit in Australia renewed the interest in magmatic low-Ti iron-oxide deposits in the Grenville Province that have been known and mined since early colonial times. Subsequent exploration in the northeastern part of the Grenville Province revealed the presence of breccia-hosted CuAuU rare-earth element (REE)-bearing iron-oxide mineralization. This deposit and other low-Ti iron-oxide deposits in the southwestern Grenville Province have a previously undocumented close spatial and temporal association with Ti-rich iron-oxide deposits. These examples demonstrate how new petrogenetic, tectonic, and ore deposit models developed in unmetamorphosed rocks can be successfully adapted to high-grade terranes, where they stimulate mineral exploration in these challenging conditions. Furthermore, by tracking the formation of ore deposits in the lower crust, the existence of unsuspected metallogenic associations in the higher crust, such as the low-Ti and high-Ti iron-oxide association observed in the Grenville Province, may be revealed.

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Attanasi, E. D., and J. H. DeYoung. "Physical deposit measures and commercial potential: The case of titanium-bearing heavy-mineral deposits." Mathematical Geology 20, no. 2 (February 1988): 97–110. http://dx.doi.org/10.1007/bf00918880.

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Walz, Josefine, Christian Knoblauch, Ronja Tigges, Thomas Opel, Lutz Schirrmeister, and Eva-Maria Pfeiffer. "Greenhouse gas production in degrading ice-rich permafrost deposits in northeastern Siberia." Biogeosciences 15, no. 17 (September 13, 2018): 5423–36. http://dx.doi.org/10.5194/bg-15-5423-2018.

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Abstract. Permafrost deposits have been a sink for atmospheric carbon for millennia. Thaw-erosional processes, however, can lead to rapid degradation of ice-rich permafrost and the release of substantial amounts of organic carbon (OC). The amount of the OC stored in these deposits and their potential to be microbially decomposed to the greenhouse gases carbon dioxide (CO2) and methane (CH4) depends on climatic and environmental conditions during deposition and the decomposition history before incorporation into the permafrost. Here, we examine potential greenhouse gas production as a result of degrading ice-rich permafrost deposits from three locations in the northeastern Siberian Laptev Sea region. The deposits span a period of about 55 kyr from the last glacial period and Holocene interglacial. Samples from all three locations were incubated under aerobic and anaerobic conditions for 134 days at 4 ∘C. Greenhouse gas production was generally higher in deposits from glacial periods, where 0.2 %–6.1 % of the initially available OC was decomposed to CO2. In contrast, only 0.1 %–4.0 % of initial OC was decomposed in permafrost deposits from the Holocene and the late glacial transition. Within the deposits from the Kargin interstadial period (Marine Isotope Stage 3), local depositional environments, especially soil moisture, also affected the preservation of OC. Sediments deposited under wet conditions contained more labile OC and thus produced more greenhouse gases than sediments deposited under drier conditions. To assess the greenhouse gas production potentials over longer periods, deposits from two locations were incubated for a total of 785 days. However, more than 50 % of total CO2 production over 785 days occurred within the first 134 days under aerobic conditions, while 80 % were produced over the same period under anaerobic conditions, which emphasizes the nonlinearity of the OC decomposition processes. Methanogenesis was generally observed in active layer samples but only sporadically in permafrost samples and was several orders of magnitude smaller than CO2 production.

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Day, Mackenzie D., and David C. Catling. "Potential aeolian deposition of intra-crater layering: A case study of Henry crater, Mars." GSA Bulletin 132, no. 3-4 (June 6, 2019): 608–16. http://dx.doi.org/10.1130/b35230.1.

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Abstract Layered deposits occur on Mars in a wide variety of settings and morphologies, including inside craters as large mounds. Many origins have been proposed for these intra-crater layered deposits, but recent work has suggested the possibility of deposition by ancient aeolian dunes. Distinguishing dune deposits requires identifying cross-strata which may not be resolvable even with the highest spatial resolution imaging of Mars. In this work, we employ an alternative method and attempt to eliminate the possibility of aeolian deposition by comparing martian layer geometries to the angles and thicknesses of aeolian sets on Earth. Layering in Henry crater falls within the expected bounds for aeolian strata, and if ancient dunes deposited these layers, then the sets record the passage of dunes with 10–100 m spacing that were generally migrating toward the center of the crater. The Henry crater mound comprises ∼8000 km3 of sediment, and if all layers reflect dune deposition, we estimate mound deposition would then take at least ∼0.5 m.y. As a whole, ∼20,000 km3 of sediment are preserved in intra-crater layered deposits in Arabia Terra. Results from this case study of Henry crater suggest that at least some of this volume may be from aeolian dunes, in which case intra-crater layered mounds may host an untapped record of very ancient martian aeolian activity.

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Komatsu, Goro, and Gian Gabriele Ori. "Exobiological implications of potential sedimentary deposits on Mars." Planetary and Space Science 48, no. 11 (September 2000): 1043–52. http://dx.doi.org/10.1016/s0032-0633(00)00078-7.

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23

Yang, Kaihui. "Gold Deposits in China: Main Types and Potential." International Geology Review 38, no. 11 (November 1996): 1006–19. http://dx.doi.org/10.1080/00206819709465378.

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Rytuba, James J. "Mercury from mineral deposits and potential environmental impact." Environmental Geology 43, no. 3 (January 2003): 326–38. http://dx.doi.org/10.1007/s00254-002-0629-5.

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Krinochkina, Olga. "Risk assessment of the potential ecological and geochemical hazard of the functioning of mining complexes." E3S Web of Conferences 135 (2019): 01050. http://dx.doi.org/10.1051/e3sconf/201913501050.

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The aim of this work is to present a methodology for assessing the potential ecological and geochemical hazard of environmental pollution during the creation of new and functioning of existing mining complexes using the example of studying representative objects. The objects were selected according to the principle of the most saturated deposits, which serve as the core of mining complexes, toxic elements and the scale of mineralization, i.e. reserves of the deposits themselves. The methodology for assessing potential ecological and geochemical hazards is based on the following three principles: hierarchical approach; significance of the assessments; objectivity of information. The first involves the comparison of proportionate units, because the calculation of risk is carried out in points. The significance of the assessments was achieved by using those factors that can have a significant impact on the environment during the development of the deposit and determine the degree of sustainability of the natural environment when exploration territories. The objectivity of information was achieved by using the necessary and sufficient number of factors for assessing the risk of exploration and development of deposits and a significant amount of data obtained from the results of ecological and geochemical work with appropriate metrological support and laboratory analytical studies only in accredited centers. The methodology involves taking into account the totality of natural and technogenic environmental impact factors when developing solid mineral deposits, ranking them by importance and actually their integral assessment. As a result of the study of a large number of mining objects, according to our own and published data, by the method of expert assessments, the main factors of the influence of the developed deposits on the environment located in various natural conditions were established. Among these factors, 4 groups are distinguished: mineralogenic, landscape, hydrogeological and technogenic.

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García, Marcelo, Jorge Correa, Víctor Maksaev, and Brian Townley. "Potential mineral resources of the Chilean offshore: an overview." Andean Geology 47, no. 1 (January 31, 2020): 1. http://dx.doi.org/10.5027/andgeov47n1-3260.

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The seabed included in the Chilean Exclusive Economic Zone (EEZ) has proper conditions to originate and host different ore deposits, but its geological knowledge is scarce and scattered. The existent studies are very limited in terms of geochemical and mineralogical analyses. The most significant non-energetic mineral resources off Chile correspond to Fe-Mn nodules and crusts, phosphorite deposits, gold and titanium placer deposits and massive sulfide deposits. Fe-Mn nodule sites occur in abyssal plains and seamounts, and around volcanic islands, at depths from 2,890 to 4,332 m, and can contain important concentrations of Cu and Ni (up to 1.38% Cu+Ni) and Co (up to 0.53%). Co-rich Fe-Mn crust occurrences have been reported around the Rapanui and Salas y Gómez islands, with Cu+Ni contents up to 0.3%. Phosphorite sites occur in Holocene sedimentary beds of the continental shelf off Peru and northern Chile, with P2O5 average content of 22.6%. Gold placer deposits are found in beaches and channels of southern Chile and may extend offshore probably in submarine canyons. Titanium placer deposits have been evaluated in different beaches of Chile and could also be continued offshore. Platinum anomalies have been found in channels and bays of southernmost Chile. No samples of Volcanogenic Massive Sulfide (VMS) mineralization are known in the Chilean EEZ to date. However, samples of hydrothermal vents, with potential for polymetallic VMS type mineralization, have been recovered around the Rapanui Island, and several seamount and volcanic island chains indicate favorable conditions for formation and preservation of these ore-deposits. The available geological information on the seabed of the Chilean EEZ is insufficient to estimate the real potential of its non-energetic mineral resources.

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Fallon, Emily, Matthias Frische, Sven Petersen, Richard Brooker, and Thomas Scott. "Geological, Mineralogical and Textural Impacts on the Distribution of Environmentally Toxic Trace Elements in Seafloor Massive Sulfide Occurrences." Minerals 9, no. 3 (March 7, 2019): 162. http://dx.doi.org/10.3390/min9030162.

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With mining of seafloor massive sulfides (SMS) coming closer to reality, it is vital that we have a good understanding of the geochemistry of these occurrences and the potential toxicity impact associated with mining them. In this study, SMS samples from seven hydrothermal fields from various tectonic settings were investigated by in-situ microanalysis (electron microprobe (EMPA) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS)) to highlight the distribution of potentially-toxic trace elements (Cu, Zn, Pb, Mn, Cd, As, Sb, Co, Ni, Bi, Ag and Hg) within the deposits, their minerals and textures. We demonstrate that a combination of mineralogy, trace element composition and texture characterisation of SMS from various geotectonic settings, when considered along with our current knowledge of oxidation rates and galvanic coupling, can be used to predict potential toxicity of deposit types and individual samples and highlight which may be of environmental concern. Although we cannot quantify toxicity, we observe that arc-related sulfide deposits have a high potential toxicity when compared with deposits from other tectonic settings based on their genetic association of a wide range of potentially toxic metals (As, Sb, Pb, Hg, Ag and Bi) that are incorporated into more reactive sulfosalts, galena and Fe-rich sphalerite. Thus, deposits such as these require special care when considered as mining targets. In contrast, the exclusive concern of ultra-mafic deposits is Cu, present in abundant, albeit less reactive chalcopyrite, but largely barren of other metals such as As, Pb, Sb, Cd and Hg. Whilst geological setting does dictate metal endowment, ultimately mineralogy is the largest control of trace element distribution and subsequent potential toxicity. Deposits containing abundant pyrrhotite (high-temperature deposits) and Fe-rich sphalerite (ubiquitous to all SMS deposits) as well as deposits with abundant colloform textures also pose a higher risk. This type of study can be combined with “bulk lethal toxicity” assessments and used throughout the stages of a mining project to help guide prospecting and legislation, focus exploitation and minimise environmental impact.

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Chiang, J. H., H. C. Cheng, M. C. M. Yang, J. G. Lo, C. W. Chi, W. Y. Lui, R. S. Liu, and T. Chang. "Lung Deposits of Lipiodol in Normal and Cirrhotic Rats." Acta Radiologica 32, no. 6 (November 1991): 474–78. http://dx.doi.org/10.1177/028418519103200607.

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The distribution of Lipiodol in the liver and lungs following arterial or portal injection was studied in normal (n = 55) and cirrhotic rats (n = 20). Using magnified xeroradiography and radioisotope labeled tracers, it was found that Lipiodol was deposited mainly in the liver and lung after either arterial or portal administration. In control rats after arterial injection, deposits in the lung peaked after 2 hours and gradually declined over 48 hours; whereas after portal injection, the deposit steadily increased for 48 hours. Twenty-five percent of cirrhotic rats demonstrated a Lipiodol-induced miliary pattern in the lung. An increased number of portosystemic shunts in cirrhotic rats was also noted. These results suggest that cirrhosis of the liver may be a potential risk factor for developing pulmonary complications after Lipiodol administration.

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Lypaczewski, Philip, Benoit Rivard, Guillaume Lesage, Kevin Byrne, Michael D’Angelo, and Robert G. Lee. "Characterization of Mineralogy in the Highland Valley Porphyry Cu District Using Hyperspectral Imaging, and Potential Applications." Minerals 10, no. 5 (May 23, 2020): 473. http://dx.doi.org/10.3390/min10050473.

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The Highland Valley Copper (HVC) district in British Columbia, Canada, is host to at least four major porphyry Cu systems: Bethlehem (~209 Ma), and Valley, Lornex, and Highmont (~208 to 207 Ma). High spatial resolution (0.2–1.0 mm/pixel) hyperspectral imagery in the shortwave infrared (SWIR) were acquired on 755 rock samples and 400 m of continuous drill core. Spectral metrics are used to measure the relative abundance of 12 minerals and an additional metric is derived to estimate white mica grain size. In the Valley and Lornex deposits, coarse-grained white mica is associated with mineralization and is detectable up to 4 km away from the deposits. Kaolinite is present within 2 km of the mineralized centers but does not necessarily occur within strongly mineralized intervals. Prehnite is ubiquitous from 4 to 8 km from the deposits. In the Bethlehem deposit, tourmaline and epidote are associated with mineralization. We propose a spectral alteration score based on these proximal hyperspectral SWIR mineralogical patterns to assist explorers in targeting porphyry Cu systems when using drill core, surface rock samples and potentially remote sensing imagery. In a production environment, this metric could serve to facilitate ore-sorting.

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Arribas, Antonio, and Toshio Mizuta. "Potential for Porphyry Copper Deposits in Northern Tōhoku (or the Exploration Potential for Base and Precious Metal Deposits in Japan 2020)." Resource Geology 68, no. 2 (February 28, 2018): 144–63. http://dx.doi.org/10.1111/rge.12167.

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31

Moran-Palacios, Henar, Francisco Ortega-Fernandez, Raquel Lopez-Castaño, and Jose V. Alvarez-Cabal. "The Potential of Iron Ore Tailings as Secondary Deposits of Rare Earths." Applied Sciences 9, no. 14 (July 21, 2019): 2913. http://dx.doi.org/10.3390/app9142913.

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Rare earths have appeared in the market with new energy and Information Technology and Communications (ITC) applications. While their demand grows exponentially, their production is experiencing a bottleneck given that their deposits are concentrated in very few locations, mainly in China. This scarcity and dependence have turned them into strategic minerals, and the location of new sources has become vital. On the other hand, the inevitable trend towards sustainability favors the reuse of waste to avoid the degradation of new areas and the need for waste storage. One of the biggest generators of waste is iron mining. The tailings are stored in huge ponds with consequent environmental problems and risks. As tailings come from a concentration process, they incorporate different amounts of rare earths depending on their separation behavior. To evaluate the viability of these resources as potential repositories of rare earths, samples of different types of deposits and treatments were selected. The presence of different rare earths in them was determined through spectroscopy techniques to evaluate their use as a deposit. The results show an increase in the concentration of rare earths, especially high-density ones, which, although currently not economically feasible given the very wide geographical distribution of iron mining, represent a fundamental strategic reserve.

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32

Gylmutdynova, Rimma, Sergey Michurin, and Elena Yelyzaryeva. "Industrial waste resource potential of ore mining and processing enterprises of the Southern Urals." Bulletin of scientific research results, no. 3 (October 17, 2017): 138–48. http://dx.doi.org/10.20295/2223-9987-2017-3-138-148.

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Objective: To assess the industrial waste resource potential in the districts of ore mining and processing enterprises (GOK) of the Southern Urals. Methods: Chemical analysis of samples of water and soil was conducted. Results: The samples of slag were collected and analyzed near an old copper plant in Sibay, the samples taken from stock piles and tailing dumps of Uchalynskiy, Gaiskiy and Burybayevskiy ore mining and processing enterprises. It was established that mineral separation plants’ waste contain 0,3-0,4% of zinc, 0,2-0,3% of copper, 20-35% of sulfur, and more than 35% of iron. The analysis of water samples taken from an old open pit and soil collected in the district of copper pyrite deposit Kul Yurt Tau indicated high content of S, Fe, Co, Cu, Zn, Pb etc. in total dry solids of water samples after after boiling down, high concentration of the above mentioned elements were detected, the latter indicated severe contamination of soil and water in the deposit’s area. Practical importance: The recycling of old GOK waste might be the solution to the existing problem, taking into account the fact, that at present deep-seated deposits of copper and zinc are exploited with a high level of economic costs. The tailing dumps of the Urals’ enterprises considerably excel many other deposits in total reserves. With technological development of beneficiation, waste may undergo recycling with the extraction of useful mining elements, while the remaining rock may be applied in the production of construction materials or returned to the places of ore mining. Moreover, the utilization of raw materials’ extraction and processing waste (on an industrial scale) will provide ecological rehabilitation of territories exposed to negative impact of facilities used for economic activities.

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Parafiniuk, Jan, Rafał Siuda, and Andrzej Borkowski. "Sulphate and arsenate minerals as environmental indicators in the weathering zones of selected ore deposits, Western Sudetes, Poland." Acta Geologica Polonica 66, no. 3 (September 1, 2016): 496–511. http://dx.doi.org/10.1515/agp-2016-0022.

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Abstract The results of a complex investigation of the sulphate and arsenate assemblages forming in the weathering zone of selected ore deposits in the Sudetes are presented. The development of the weathering zone has been characterised in the polymetallic ore deposits at Miedzianka-Ciechanowice and Radzimowice, and the pyrite deposit at Wieściszowice, which differ in the chemical compositions of the ore and barren minerals and the hydrological conditions. Secondary sulphate and arsenate mineral assemblages vary significantly among the ore deposits under study. Their crystallization is discussed, taking into consideration the stability of particular minerals and the paths of their transformation. It is shown that these minerals have great potential as indicators of weathering processes. A significant role for microorganisms in the formation of the weathering zone of the ore deposits under study is also proven.

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34

Sadeghi, Martiya, Nikolaos Arvanitidis, and Anna Ladenberger. "Geochemistry of Rare Earth Elements in Bedrock and Till, Applied in the Context of Mineral Potential in Sweden." Minerals 10, no. 4 (April 18, 2020): 365. http://dx.doi.org/10.3390/min10040365.

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The Rare Earth Element (REE) mineralizations are not so “rare” in Sweden. They normally occur associated and hosted within granitic crystalline bedrock, and in mineral deposits together with other base and trace metals. Major REE-bearing mineral deposit types are the apatite-iron oxide mineralizations in Norrbotten (e.g., Kiruna) and Bergslagen (e.g., Grängesberg) ore regions, the various skarn deposits in Bergslagen (e.g., Riddarhyttan-Norberg belt), hydrothermal deposits (e.g., Olserum, Bastnäs) and alkaline-carbonatite intrusions such as the Norra Kärr complex and Alnö. In this study, analytical data of samples collected from REE mineralizations during the EURARE project are compared with bedrock and till REE geochemistry, both sourced from databases available at the Geological Survey of Sweden. The positive correlation between REE composition in the three geochemical data groups allows better understanding of REE distribution in Sweden, their regional discrimination, and genetic classification. Data provides complementary information about correlation of LREE and HREE in till with REE content in bedrock and mineralization. Application of principal component analysis enables classification of REE mineralizations in relation to their host. These results are useful in the assessment of REE mineral potential in areas where REE mineralizations are poorly explored or even undiscovered.

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35

Tang, Jie, DongLiang Lv, CunYing Xu, YiXin Hua, QiBo Zhang, PingZhao Niu, and XiaoLin Zhu. "The Effect of Water on the Tin Electrodeposition from [Bmim]HSO4 Ionic Liquid." International Journal of Electrochemistry 2018 (August 9, 2018): 1–7. http://dx.doi.org/10.1155/2018/1210394.

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The electrodeposition of tin from SnO in ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate ([Bmim]HSO4) in the presence of water at different cathodic potential was investigated. With the addition of water to [Bmim]HSO4ionic liquid, the electrochemical window of the electrolyte decreases and the reduction potential of Sn(II) positively shifts. The water content of ionic liquid electrolyte has a distinct effect on morphology of the deposits. As water content increased from 0 to 50% (v/v), the morphology of deposits varies from granular to hexagonal rod-like, then to hollow tubular, and finally to wire-like. The XRD phase analysis showed that both Sn and CuSn alloys were deposited in ionic liquid/water mixtures. However, in dried ionic liquids only Cu3Sn was obtained, surprisingly. The difference in the structure might be attributed to the various interactions of the ions with the Cu substrate. In addition, the deposition potential was found to play a significant role in the morphology of deposits.

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36

Jiménez-Franco, Abigail, Pura Alfonso, Carles Canet, and Juan Elvys Trujillo. "Mineral chemistry of In-bearing minerals in the Santa Fe mining district, Bolivia." Andean Geology 45, no. 3 (June 6, 2018): 410. http://dx.doi.org/10.5027/andgeov45n3-3052.

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The Santa Fe mining district is located in the Central Andean tin belt of Bolivia and contains several Sn-Zn-Pb-Ag deposits. From the economic point of view, the most important deposits of the district are Japo, Santa Fe and Morococala. Beyond the traditional metal commodities, the Central Andean Tin Belt could become an exploration target for indium, owing to the potential of the ore-bearing paragenesis with high concentrations of this technology-critical element. In the Santa Fe mining district, the ore occurs as two main types: (a) Sn-rich cassiterite-quartz veins, and (b) Zn-Pb-Ag veins with sphalerite, galena and stannite mineral phases. The In content in igneous rocks is between 1.5 and 2.5 ppm, whereas in the ore concentrate it attains up to 200 ppm. The 1,000×In/Zn ratio in concentrate ranges from 25 up to 4,000. Exceptionally high In values were found in sakuraiite from Morococala deposit (2.03 wt%). Sakuraiite in this deposit shows evidences for a link between stannite and kësterite trend of solid solutions. There is a noteworthy exploration potential for strategic metals in this district and even in similar deposits elsewhere in the Central Andean tin belt.

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37

Tomašić, Ivan, and Zrinaka Vidovic-Tisanic. "Potential of Medium to More Fractured Natural Stone Deposits." Key Engineering Materials 548 (April 2013): 39–47. http://dx.doi.org/10.4028/www.scientific.net/kem.548.39.

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Exploitation and processing of small stone blocks and tombolons has a major impact on profitability. It is pointed out that the natural stone needs to be rationally used in deposits. Resources of rock mass tend to be greatly increased due to the utilization of different sizes of blocks in deposits or quarries. This approach encourages the application of Lasky's relationship in the deposits of natural stone and quarries. Based on this relationship we can simply say that if the sizes of stone blocks and other stone products decrease arithmetically, then reserves increase geometrically or exponentially. On the presented examples, the utilization of the rock mass was analysed by the application of two different technologies of exploitation. Besides, if the exploitation of stone blocks of different sizes achieves high utilization of the rock mass, then exploitation of aggregates and fillers increases much more. It is necessary to emphasize the existence of the border area based on favourable discontinuity density and spatial discontinuity position. Decision should be made whether to apply I or II variant of the exploitation (making vertical and horizontal cuttings or separation of the blocks along natural discontinuities, or using slanting cuts). The example is shown and analysed as a two-dimensional problem.

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38

Hoatson, Dean M., Subhash Jaireth, and A. Lynton Jaques. "Nickel sulfide deposits in Australia: Characteristics, resources, and potential." Ore Geology Reviews 29, no. 3-4 (November 2006): 177–241. http://dx.doi.org/10.1016/j.oregeorev.2006.05.002.

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39

Ilham, D. J., F. R. Kautsar, J. Januarti, U. Anggarini, and D. Fiantis. "The potential use of volcanic deposits for geopolymer materials." IOP Conference Series: Earth and Environmental Science 497 (June 10, 2020): 012035. http://dx.doi.org/10.1088/1755-1315/497/1/012035.

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40

Lobova, G., E. Osipova, V. Isaev, and D. Terre. "Petroleum potential of Lower-Jurassic deposits in Nurolsk megadepression." IOP Conference Series: Earth and Environmental Science 24 (January 1, 2015): 012001. http://dx.doi.org/10.1088/1755-1315/24/1/012001.

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41

Gretskaya, E. V., and M. V. Dakhnova. "Hydrocarbon potential of coal-bearing deposits of South Sakhalin." Doklady Earth Sciences 432, no. 2 (June 2010): 825–28. http://dx.doi.org/10.1134/s1028334x10060255.

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42

McGregor, F., E. Ramanaidou, and M. Wells. "Phanerozoic ooidal ironstone deposits – generation of potential exploration targets." Applied Earth Science 119, no. 1 (March 2010): 60–64. http://dx.doi.org/10.1179/037174510x12853354810660.

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43

Spiske, Michaela, Jens Piepenbreier, Carlos Benavente, and Heinrich Bahlburg. "Preservation potential of tsunami deposits on arid siliciclastic coasts." Earth-Science Reviews 126 (November 2013): 58–73. http://dx.doi.org/10.1016/j.earscirev.2013.07.009.

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44

Wiemer, Gauvain, and Achim Kopf. "Altered marine tephra deposits as potential slope failure planes?" Geo-Marine Letters 35, no. 4 (May 16, 2015): 305–14. http://dx.doi.org/10.1007/s00367-015-0408-4.

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45

Bajat, Jelena, Sanja Stevanovic, and Bojan Jokic. "Microstructure and corrosion behavior of Zn-Co alloys deposited from three different plating baths." Journal of the Serbian Chemical Society 76, no. 11 (2011): 1537–50. http://dx.doi.org/10.2298/jsc110331137b.

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The effects of plating baths of different composition on the microstructure and corrosion stability of Zn-Co alloy coatings were studied. Zn-Co alloys with the same Co content were deposited from chloride plating baths containing different amounts of Co2+ ions, as well as from a sulphate-chloride plating bath. The surface morphology and crystallite size were investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The corrosion stability of the Zn- Co alloys was determined by following the change of the open circuit potential with time of immersion in a 3 % NaCl solution and by polarization measurements. The results showed a significant influence of the plating bath on the morphology and corrosion stability of the Zn-Co alloys. The surface of the alloy coatings deposited from the chloride baths were uniform and homogenous, whereas the deposit obtained from the sulphate-chloride bath was quite inhomogeneous. The corrosion stability of the homogenous Zn-Co deposits obtained by deposition from both chloride baths was higher than that of the deposit obtained from the sulphate-chloride bath. An increase in the Co content in the chlorideplating bath resulted in a reduction of the alloy crystallite size and it was shown that the alloy with the smaller crystallites of the two alloy deposits, although having the same chemical content, exhibited a lower corrosion rate.

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46

Sirisokha, Seang, Lucas Donny Setijadji, and I. Wayan Warmada. "MINERAL POTENTIAL MAPPING USING GEOGRAPHIC INFORMATION SYSTEMS (GIS) FOR GOLD MINERALIZATION IN WEST JAVA, INDONESIA." Journal of Applied Geology 7, no. 1 (July 27, 2015): 61. http://dx.doi.org/10.22146/jag.26980.

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Western Java is a part of the Sunda Banda magmatic belt. This belt is well known to be host for several gold deposits in Indonesia, the distribution of 107 Au occurrences in this area was examined in terms of spatial association with various geological phenomena. The goal of this project is to use GIS to conduct weights of evidence (WofE) model for gold mineralization in West Java, Indonesia. A Geographic Information System (GIS) is a computer system for capturing, storing, querying, analyzing, and displaying geospatial data and weight of evidence method is one of the most important datadriven methods for mapping in GIS. The method is a probability based on technique for mapping mineral potential using the spatial distribution of known mineral occurrences. Therefore this method is very useful for gold potential mapping. There are six evidences maps such as NE–SW lineaments NW–SE Lineament, host rocks, heat sources, clay alteration and limonitic alteration, have been combined using a weights of evidence model to predict gold potential in West Java. The best predictive map generated by this method deﬁnes 21.62% (9902 km) of study area as favourable zones for gold mineralization further exploration work. It predicts correctly 74 (92.5%) of the 80 model deposits and predicts correctly 26 (96.35%) of the 27 validation deposits, has 6 main 2 prospective target for future exploration are located in Bayah Dome, southern mountain, Honjie Igneous Complex and Bogor zone, Purwakarta. Bayah Dome is highest potential area for gold deposit like Gunung Pongor, Cikidang, Cirotan, Ciawitali, Cikotok destricts and other deposits. The potential area of Au occurrences in research area is associated with NE–SW and NW–SE structure/ lineaments, dominated surrounding the Tertiary intrusive rock unit and hosted in Miocene to Pleistocene lithology rock unit.

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North, Jon, and D. H. C. Wilton. "Origins of stratiform and stratabound Fe–Cu–Zn horizons in the Lower Proterozoic Moran Lake Group, Labrador Central Mineral Belt." Canadian Journal of Earth Sciences 29, no. 5 (May 1, 1992): 837–53. http://dx.doi.org/10.1139/e92-072.

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Zn, Cu, and Fe are concentrated as stratiform and stratabound sulphide-rich beds in the Lower Proterozoic Warren Creek Formation, Moran Lake Group, central Labrador. Upper Member sedimentary rocks have a hydrothermal-like Fe enrichment but a dominantly hydrogenous signature as indicated by high Al2O3 relative to SiO2, and high Al and Fe relative to Mn. The Upper Member shales and sulphide-rich beds were deposited as Fe-rich pelagic sediments. The paucity of Mn and abundance of Fe in typical shale samples and lack of Cu, Pb, and Zn fractionation in stratiform massive sulphide beds that contain up to 4702 ppm Zn, 533 ppm Cu, and 15 ppm Pb suggest that deposition occurred in restricted brine pools (i.e., Cu and Zn were precipitated rapidly and were not fractionated). Stratabound sphalerite mineralization containing > 3.7% Zn and 121 ppm Cu (but no Pb) was deposited in a porous lithology at the top of the Warren Creek Formation and represents a unique style of metal concentration.The stratiform deposits probably formed by advection of low-temperature connate waters in a situation typical of sediment-hosted exhalative mineralization (SEDEX). The potential for ore-grade metal concentration is apparently low because metal associations (Fe,Cu,Pb,Zn,Ba) are unlike those of sediment-hosted massive sulphide deposits, the sediments have a dominantly hydrogenous rather than hydrothermal signature, and the absolute grades of known occurrences are very low. The stratabound Zn deposit was probably formed by converting Zn-rich brines (≤ 200 °C) trapped during development of a hydrothermal convection system during a period of increased geothermal gradient. The potential for this type of occurrence in the Warren Creek area to reach economic grade is limited because the convection cells were shallow, ephemeral, and without the metal associations of sediment-hosted massive sulphide deposits.

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Batsaikhan, Undarmaa, Tsuchiya Noriyoshi, Chimedtseren Anaad, and Batkhishig Bayaraa. "Petrochemical characteristics of late Paleozoic magmatic rocks of the Mandakh area, southeast Mongolia." Mongolian Geoscientist, no. 47 (December 31, 2018): 5–21. http://dx.doi.org/10.5564/mgs.v0i47.1061.

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The late Paleozoic magmatic rocks are widely distributed in the Mandakh area which is located in the Gurvansaikhan and Manlai terrains, where porphyry Cu deposits occur. In this paper we discuss petrochemical features and mineral assemblages of magmatic rocks in the Mandakh area. Furthermore, we compared petrochemical characteristics of magmatic rocks in the Mandakh area with host magmatic rocks of the Tampakan deposit (Philippines), Cerro Colorado deposit (Chili) and negative criteria of Cu deposits (Japan) due to try to characterize potential of the porphyry copper deposit related to magmatic rocks in Mandakh area. Geochemical features of magmatic rocks in Mandakh area are calc-alkaline, magnetite-series, I-type and similar to adakite type. The Devonian intrusive rocks comprised of syenite and syenogranite, while the Carboniferous intrusive rocks consist of granodiorite, monzodiorite, quartz-monzonite and hornblende granite. Devonian magmatic rocks are more alkaline in composition. Although, Devonian and Carboniferous magmatic rocks are slightly different from each other. Comparing with bonanza copper deposits in the world, they are possible to host porphyry mineralization.

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Yang, Tianjian, Xiaoming Sun, Guiyong Shi, and Ying Liu. "LA-ICP-MS U–Pb Dating of Cenozoic Rutile Inclusions in the Yuanjiang Marble-Hosted Ruby Deposit, Ailao Shan Complex, Southwest China." Minerals 11, no. 4 (April 19, 2021): 433. http://dx.doi.org/10.3390/min11040433.

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Among the marble-hosted ruby deposits in the Himalayan tectonic belt, which yields the highest-quality rubies in the world, the Yuanjiang deposit is the only economically viable one located in China. More attempts are necessary to put constraints on the ore-forming age of these marble-hosted ruby deposits. Here, we dated rutile inclusions in the Yuanjiang rubies using the LA-ICP-MS U–Pb method, which yielded a lower intercept 206Pb/238U age of 20.2 ± 1.2 Ma on the Tera-Wasserburg plot, close to the 22.5–22.2 Ma 40Ar/39Ar ages of phlogopite from the ruby host matrix assemblage. Our U–Pb rutile age put a constraint on the cooling history of the Yuanjiang rubies deposit. The new rutile age is consistent with our previous model that shows the ca. 28–22 Ma left lateral shearing plays an important role in transporting the ruby deposit toward the surface. This study provides the first example of in-situ U–Pb dating of rutile in the Himalayan tectonic belt, demonstrating the great potential of U–Pb rutile geochronology for Cenozoic mineral deposits.

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Eliopoulos, Demetrios G., and Maria Economou-Eliopoulos. "Trace Element Distribution in Magnetite Separates of Varying Origin: Genetic and Exploration Significance." Minerals 9, no. 12 (December 6, 2019): 759. http://dx.doi.org/10.3390/min9120759.

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Magnetite is a widespread mineral, as disseminated or massive ore. Representative magnetite samples separated from various geotectonic settings and rock-types, such as calc-alkaline and ophiolitic rocks, porphyry-Cu deposit, skarn-type, ultramafic lavas, black coastal sands, and metamorphosed Fe–Ni-laterites deposits, were investigated using SEM/EDS and ICP-MS analysis. The aim of this study was to establish potential relationships between composition, physico/chemical conditions, magnetite origin, and exploration for ore deposits. Trace elements, hosted either in the magnetite structure or as inclusions and co-existing mineral, revealed differences between magnetite separates of magmatic and hydrothermal origin, and hydrothermal magnetite separates associated with calc-alkaline rocks and ophiolites. First data on magnetite separates from coastal sands of Kos Island indicate elevated rare earth elements (REEs), Ti, and V contents, linked probably back to an andesitic volcanic source, while magnetite separated from metamorphosed small Fe–Ni-laterites occurrences is REE-depleted compared to large laterite deposits. Although porphyry-Cu deposits have a common origin in a supra-subduction environment, platinum-group elements (PGEs) have not been found in many porphyry-Cu deposits. The trace element content and the presence of abundant magnetite separates provide valuable evidence for discrimination between porphyry-Cu–Au–Pd–Pt and those lacking precious metals. Thus, despite the potential re-distribution of trace elements, including REE and PGE in magnetite-bearing deposits, they may provide valuable evidence for their origin and exploration.

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Journal articles on the topic 'Potential deposits'

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