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Letteratura scientifica selezionata sul tema "Minerals"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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Articoli di riviste sul tema "Minerals"

Cruz Gaona, Roel, and Isabel Lazaro. "Mexican Contribution to Sulfide Minerals Electrochemistry: A Review." Journal of the Mexican Chemical Society 68, no. 4 (2024): 833–51. http://dx.doi.org/10.29356/jmcs.v68i4.2310.

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Abstract. The electrochemical study of sulfide minerals has emerged as a vital area for enhancing sustainable methods for extraction and recovery of metals. This field encompasses diverse investigations. The use of Mineral Carbon Paste Electrodes (CPE) is one of the strategies developed in México, and their application for analyzing systems of extractive metallurgy range from analyses of bacterial-mineral interactions to key studies that have delved into understanding mineral dissolution mechanisms, with a particular focus on minerals such as galena, sphalerite, copper sulfides, and silver min

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Daiuto, Érica Regina, Rogério Lopes Vieites, Daniela Regia Pigoli, and Lidia Raquel de Carvalho. "ESTABILIDADE DE MINERAIS EM HORTALIÇAS SUBMETIDAS A DIFERENTES MÉTODOS DE COZIMENTO." Nativa 3, no. 2 (2015): 102–8. http://dx.doi.org/10.31413/nativa.v3i2.2032.

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O objetivo desse trabalho foi verificar o método de cozimento mais adequado para o preparo de hortaliças, visando minimizar as perdas de minerais. Partes convencionais e não convencionais de abóbora, brócolis, cenoura e couve-flor foram submetidas a quatro tipos de tratamentos térmicos (imersão, vapor, e micro-ondas). Avaliou-se os teores de minerais (Fe, Zn, Mg, K, P e Ca). As análises foram realizadas na hortaliça fresca e após cozimento pelos diferentes métodos em estudo. O conteúdo de minerais foi superior ou idêntica à parte convencional das hortaliças avaliadas. Houveram perdas de minera

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Ivanov, A. V., А. A. Yaroshevskiy, and M. A. Ivanova. "Meteorites minerals." Геохимия 64, no. 8 (2019): 869–932. http://dx.doi.org/10.31857/s0016-7525648869-932.

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“The Meteorite Minerals Catalog” is the first edition in Russia prepared in the 21st century. It includes all the minerals found in meteorites, approved by the Committee on New Minerals and MMA Minerals Names, approved before January 1, 2017, and mineral phases. The Russian and English names, chemical composition, as well as meteorites or meteorite groups, which are characterized by the considered minerals are given for all minerals and mineral phases. Mainly the first description of all minerals and phases and references to publications are also given in the Catalog. Samples of minerals whose

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Mandarino, Joseph A., and Joel D. Grice. "New Minerals recently approved by the Commission on New Minerals and Mineral Names International Mineralogical Association." European Journal of Mineralogy 10, no. 5 (1998): 1083–90. http://dx.doi.org/10.1127/ejm/10/5/1083.

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Mandarino, Joseph A. "New minerals recently approved by the Commission on New Minerals and Mineral Names International Mineralogical Association." European Journal of Mineralogy 3, no. 6 (1991): 1009–14. http://dx.doi.org/10.1127/ejm/3/6/1009.

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Mandarino, Joseph A. "New minerals recently approved by the Commission on New Minerals and Mineral Names International Mineralogical Association." European Journal of Mineralogy 4, no. 6 (1992): 1421–28. http://dx.doi.org/10.1127/ejm/4/6/1421.

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Mandarino, Joseph A. "New minerals recently approved by the Commission on New Minerals and Mineral Names International Mineralogical Association." European Journal of Mineralogy 6, no. 5 (1994): 725–32. http://dx.doi.org/10.1127/ejm/6/5/0725.

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Mandarino, Joseph A. "New minerals recently approved by the Commission on New Minerals and Mineral Names International Mineralogical Association." European Journal of Mineralogy 7, no. 2 (1995): 447–56. http://dx.doi.org/10.1127/ejm/7/2/0447.

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Mandarino, Joseph A. "New minerals recently approved by the Commission on New Minerals and Mineral Names International Mineralogical Association." European Journal of Mineralogy 7, no. 5 (1995): 1205–12. http://dx.doi.org/10.1127/ejm/7/5/1205.

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Mandarino, Joseph A. "New minerals recently approved by the Commission on New Minerals and Mineral Names International Mineralogical Association." European Journal of Mineralogy 8, no. 5 (1996): 1213–22. http://dx.doi.org/10.1127/ejm/8/5/1213.

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Tesi sul tema "Minerals"

Lammers, Kristin D. "Carbon dioxide sequestration by mineral carbonation of iron-bearing minerals." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/339925.

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Chemistry Ph.D. Carbon dioxide (CO2) is formed when fossil fuels such as oil, gas and coal are burned in power producing plants. CO2 is naturally found in the atmosphere as part of the carbon cycle, however it becomes a primary greenhouse gas when human activities disturb this natural balanced cycle by increasing levels in the atmosphere. In light of this fact, greenhouse gas mitigation strategies have garnered a lot of attention. Carbon capture, utilization and sequestration (CCUS) has emerged as a possible strategy to limit CO2 emissions into the atmosphere. The technology involves cap

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Frost, Ray. "Studies of selected minerals, mineral surfaces and their colloidal dispersions." Thesis, Queensland University of Technology, 2001.

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This thesis is about the molecular structure of minerals, their surface modification and the dispersion of selected minerals of a ceramic nature as sols and gels. The theme that permeates through this work and connects the different elements of the work is the search for fundamental knowledge and understanding of mineral structure and mineral surface structure. The underlying principal is that of molecular structure of surfaces and the changes in that molecular structure through modification of the surfaces. There are seven research divisions of study reported in this thesis: (A) Molecu

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Adams, Adrian Richard. "The degradation of atrazine by soil minerals : effects of drying mineral surfaces." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86515.

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Thesis (MScAgric)--Stellenbosch University, 2014. ENGLISH ABSTRACT: The herbicide atrazine (ATZ, 2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine) has been identified as an environmental endocrine disruptor and possible human carcinogen. The presence of atrazine, along with its degradation products, in soils and water supplies therefore raises concern. Atrazine biodegradation in soils is well-covered to date, however, atrazine degradation by abiotic mineral surfaces, and the chemical mechanism by which it occurs, is not fully understood. Furthermore, with a changing global climate, the

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Teixeira, Alete Paixão. "Determinação de elementos essenciais em arroz empregando espectrometria de fluorescência de raios X de energia dispersiva." reponame:Repositório Institucional da UFBA, 2010. http://www.repositorio.ufba.br/ri/handle/ri/9897.

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71f. Submitted by Ana Hilda Fonseca (anahilda@ufba.br) on 2013-04-09T13:15:43Z No. of bitstreams: 1 dissertação ALETE_definitiva_110330.pdf: 1412727 bytes, checksum: c409be4d388a7ed5944c1d0866387a9d (MD5) Approved for entry into archive by Ana Hilda Fonseca(anahilda@ufba.br) on 2013-04-19T14:50:36Z (GMT) No. of bitstreams: 1 dissertação ALETE_definitiva_110330.pdf: 1412727 bytes, checksum: c409be4d388a7ed5944c1d0866387a9d (MD5) Made available in DSpace on 2013-04-19T14:50:36Z (GMT). No. of bitstreams: 1 dissertação ALETE_definitiva_110330.pdf: 1412727 bytes, checksum: c409be4d388a7ed5

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Ur, Rehman Bilal. "Modelling a Mineral Froth Flotation Process : Case Study: Minerals process at Boliden AB." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-51600.

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We present an approach to model the dynamic of a copper flotation process. The conventional approach of system identification is applied to model the dynamics. In this research, experiments are performed to collect process data of determined input and output variables. It is followed by data pre-processing to handle outliers and to remove high frequency disturbances. Simulation and validation responses of linear estimated models, which captured the dynamic of the process, are presented. The long term goal is to use estimated models to design a models-based control system.

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DiFeo, Anthony. "Heterocoagulation of sulphide minerals." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0032/NQ64547.pdf.

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Higgins, I. "Sialons from natural minerals." Thesis, University of Newcastle Upon Tyne, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375599.

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Needham, Sarah Jane. "Creatures, fabrics and minerals." Thesis, University of Liverpool, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426129.

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Duncan, Helen. "Erosion corrosion by minerals." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278290.

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Rêgo, Eric Siciliano. "Variation of minerals and clay minerals recorded in the Neo-Tethys (central Turkey): new evidence of climatic changes during the middle Eocene." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/21/21136/tde-23032018-152550/.

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Minerals and clay minerals in continental sedimentary successions are valuable tools for reconstructing past environmental conditions. Given the state of preservation of clays minerals, it is possible to identify how they were formed, providing clues about continental weathering conditions (inherited minerals) and geochemical conditions in the water column (neoformed or transformed). This study presents new mineralogical data from the Baskil section, a highly preserved middle Eocene succession in the Neo-Tethys (central Turkey). A gradual shift from a well-crystalline illite and chlorite inter

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Libri sul tema "Minerals"

Rosborg, Ingegerd, ed. Drinking Water Minerals and Mineral Balance. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-09593-6.

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Rosborg, Ingegerd, and Frantisek Kozisek, eds. Drinking Water Minerals and Mineral Balance. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-18034-8.

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Mervyn, Len. The dictionary of minerals: The complete guide to minerals and mineral therapy. Thorsons, 1985.

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Pellant, Chris. Minerals. Ticktock, 2008.

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Spilsbury, Louise. Minerals. Raintree, 2012.

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Faulkner, Rebecca. Minerals. Raintree, 2008.

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Isle of Wight (England). Joint Planning Technical Unit., ed. Minerals. Isle of Wight Joint Planning Technical Unit, 1992.

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Švenek, Jaroslav. Minerals. Octopus, 1989.

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Pellant, Chris. Minerals. Gareth Stevens Pub., 2009.

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Miller-Schroeder, Patricia. Minerals. AV2 by Weigl, 2011.

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Capitoli di libri sul tema "Minerals"

DeMan, John M. "Minerals." In Instructor’s Manual For Principles of Food Chemistry. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-0815-1_6.

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Okrusch, Martin, and Hartwig E. Frimmel. "Minerals." In Springer Textbooks in Earth Sciences, Geography and Environment. Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-57316-7_2.

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Alais, C., and G. Linden. "Minerals." In Food Biochemistry. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-2119-8_6.

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Mathias, Dietger. "Minerals." In Staying Healthy From 1 to 100. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49195-9_21.

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Yacobi, B. G., and D. B. Holt. "Minerals." In Cathodoluminescence Microscopy of Inorganic Solids. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4757-9595-0_10.

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Silverman, Randee, and Jeremy Brauer. "Minerals." In The Complete Guide to Nutrition in Primary Care. Blackwell Publishing Ltd, 2008. http://dx.doi.org/10.1002/9780470691793.ch12.

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Webster, Carl D., and Chhorn Lim. "Minerals." In Dietary Nutrients, Additives, and Fish Health. John Wiley & Sons, Inc, 2015. http://dx.doi.org/10.1002/9781119005568.ch9.

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Belitz, H. D., W. Grosch, and P. Schieberle. "Minerals." In Food Chemistry. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-07279-0_8.

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Belitz, H. D., and W. Grosch. "Minerals." In Food Chemistry. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-07281-3_8.

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deMan, John M. "Minerals." In Principles of Food Chemistry. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4614-6390-0_5.

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Atti di convegni sul tema "Minerals"

Jones, D. A., and A. J. P. Paul. "Galvanic Interactions between Alloys and Minerals in Sulfuric Acid." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88245.

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Abstract Many semiconducting minerals have sufficient conductivity to permit electrochemical reactions on their surfaces. Consequently, galvanic interactions will occur when such minerals are coupled to metals or other conducting minerals. Accelerated galvanic corrosion of metals coupled to noble minerals is quite likely, because most minerals exhibit potentials in solution which are noble to the corrosion potentials of metal alloys. Anodic and cathodic polarization diagrams can be used to predict the galvanic corrosion rates to be expected from any given galvanic couple in a particular corros

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Ramanan, B., S. Bhuvaneswari, Prashanth C. Upadhya, R. Venkateswaran, and K. V. Sriram. "Two-stage deep learning pipeline for automated mineral classification in planetary Raman spectra." In CLEO: Applications and Technology. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.jtu2a.208.

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A novel approach is employed to improve mineral classification in planetary Raman spectra using a two-stage deep learning pipeline utilizing convolutional denoising autoencoders for pre-processing and convolution neural networks to classify minerals.

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Isaiah, Olajuyi, Afolayan Oluwasegun, and Ogunmodimu Olumide. "Preliminary investigation on Nigerian Lithium ores for efficient Lithium oxide extraction." In Proceedings of XVI International Mineral Processing and Recycling Conference, Belgrade, 28-30.05.2025. University of Belgrade, Technical Faculty, Bor, 2024. https://doi.org/10.5937/imprc25681s.

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This paper assesses the compositions of the Lithium-rich minerals and the quantity of extractable Lithium oxide in the minerals. The x-ray diffraction (XRD) shows 17% - 34% of spodumene and 9% to 30% of lepidiolite. Similarly, atomic absorption microscopy (AAS) indicates that the Lithium-rich minerals contain 0.820% - 3.051% and 0.040 - 2.395% of Lithium oxide (Li2O). Further results confirm the presence of Lithium-rich minerals in Nigeria, and a high quantity of Lithium-rich minerals suggests that high Lithium oxide can be extracted. This information is useful for miners, mining and mineral p

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Le, Franck, Sihyung Lee, Tina Wong, Hyong S. Kim, and Darrell Newcomb. "Minerals." In the 2006 SIGCOMM workshop. ACM Press, 2006. http://dx.doi.org/10.1145/1162678.1162681.

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Persson, Phil. "Outstanding crystalized minerals of the Colorado Mineral Belt." In 42nd New Mexico Mineral Symposium. New Mexico Bureau of Geology and Mineral Resources, 2022. http://dx.doi.org/10.58799/nmms-2022.621.

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Morrison, Shaunna M., Robert T. Downs, Joshua J. Golden, et al. "SOCIAL NETWORK OF COPPER MINERALS: A MINERAL ECOLOGY STUDY." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-279379.

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Nakajima, Yasuharu, Joji Yamamoto, Tomoko Takahashi, et al. "Development of Elemental Technologies for Seafloor Mineral Processing of Seafloor Massive Sulfides." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-96040.

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Abstract Seafloor Massive Sulfides have been expected to be future mineral resources. The grade of valuable metallic elements in ores of Seafloor Massive Sulfides is usually small percentage. If valuable minerals can be extracted from the ores on deep seafloor, the total mining cost can be reduced significantly. The authors proposed Seafloor Mineral Processing, where ores are to be ground into fine particles and separated into concentrates and tailings on seafloor. The Seafloor Mineral Processing system consists of processing units for unit operations such as grinding and separation. To invest

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Aghamirian, Massoud, Vu Truong, Kristina Muntu, Jean-Gabriel Fraboulet, Sean Salour, and Cook Kawenski. "Investigations into Lithium minerals processing." In Proceedings of XVI International Mineral Processing and Recycling Conference, Belgrade, 28-30.05.2025. University of Belgrade, Technical Faculty, Bor, 2024. https://doi.org/10.5937/imprc25075a.

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Spodumene is the primary Lithium mineral, however, other minerals like lepidolite, petalite, zinnwaldite, and Li-clays are gaining importance. Different processing approaches are needed to address different challenges. Dense Media Separation (DMS) can concentrate spodumene and petalite, but recoveries are often limited by grain size. Froth flotation is widely used to concentrate spodumene and is the main lepidolite beneficiation method, where spodumene is floated with anionic fatty acids and lepidolite with cationic amine collectors. Zinnwaldite, a high-iron lepidolite mineral, can utilize mag

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Morgan, Charles L. "The Status of Marine Mining Worldwide." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-80048.

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Metals are fundamental components of modern society worldwide, and, despite the current economic downturn, we know we will be faced with ever increasing demands and ever-shrinking supplies. Efforts to achieve sustainable supplies of minerals must include efforts to expand the supply. About 60% of the ocean surface consists of the ocean floor, so it is reasonable to expect that deep ocean minerals could contribute significantly to the world supply. Human efforts to recover minerals have thus far concentrated almost exclusively on land-based resources, so it is reasonable to postulate that marin

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Hazen, Robert, Shaunna Morrison, Shaunna Morrison, et al. "ON THE PARAGENETIC MODES OF MINERALS: A MINERAL EVOLUTION PERSPECTIVE." In GSA Connects 2021 in Portland, Oregon. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021am-365916.

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Rapporti di organizzazioni sul tema "Minerals"

Холошин, Ігор Віталійович, Наталя Борисівна Пантелєєва, Олександр Миколайович Трунін, Людмила Володимирівна Бурман, and Ольга Олександрівна Калініченко. Infrared Spectroscopy as the Method for Evaluating Technological Properties of Minerals and Their Behavior in Technological Processes. E3S Web of Conferences, 2020. http://dx.doi.org/10.31812/123456789/3929.

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Infrared spectroscopy (IR) is a highly effective method for the analysis of minerals, rocks and ores, capable of solving a whole range of problems when choosing innovative solutions for the technological processing of various types of mineral raw materials. The article considers the main directions of using the infrared spectroscopy method in assessing the technological properties of minerals and their behavior in technological processes: evaluation of the grade (quality) of mineral raw materials; analysis of the behavior of minerals in the technological process with prediction of their techno

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Mills, Stephanie E., and Andrew Rupke. Critical Minerals of Utah, Second Edition. Utah Geological Survey, 2023. http://dx.doi.org/10.34191/c-135.

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Utah is a state with diverse geology and natural resources, and this diversity extends to mineral resources that are deemed critical by the U.S. Department of the Interior. Utah’s critical mineral portfolio includes current producers, known resources, areas of past production, and undeveloped occurrences. This report, now in its second edition, summarizes the geographic and geologic distribution of critical minerals within Utah. Utah is notable for being the global leader in beryllium production; being the only domestic producer of magnesium metal; being one of only two states producing lithiu

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Lougheed, H. D., M. B. McClenaghan, D. Layton-Matthews, and M. I. Leybourne. Indicator minerals in fine-fraction till heavy-mineral concentrates determined by automated mineral analysis: examples from two Canadian polymetallic base-metal deposits. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328011.

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Exploration under glacial sediment cover is a necessary part of modern mineral exploration in Canada. Traditional indicator methods use visual examination to identify mineral grains in the 250 to 2000 µm fraction of till heavy-mineral concentrates (HMC). This study tests automated mineralogical methods using scanning electron microscopy to identify indicator minerals in the fine (&amp;lt;250 µm) HMC fraction of till. Automated mineralogy of polished grains from the fine HMC enables rapid data collection (10 000-300 000 grains/sample). Samples collected near two deposits were used to test t

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Garg, Kartikeya. Enhancing Sustainability in Africa's Critical Minerals Sectors. Commonwealth Secretariat, 2024. https://doi.org/10.14217/comsec.1134.

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Critical minerals mining in Africa plays a crucial role in the global economy, supplying essential resources for advanced technologies. The continent is endowed with abundant deposits, nearly 30 percent of the world’s share of vital minerals, including cobalt, lithium, manganese and graphite, which are indispensable for producing electric vehicles and renewable energy systems. The demand for criticalminerals for these technologies is projected to increase fivefold over the next decade. Addressing these issues through international regulations and sustainable mining initiatives is essential for

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Garg, Kartikeya, and Brendan Vickers. Harnessing Africa's Critical Minerals Wealth. Commonwealth Secretariat, 2024. https://doi.org/10.14217/comsec.1133.

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Africa holds about 30 per cent of the world’s mineral resources, many of which are vital for the energy transition from fossil fuels to renewables and low-carbon technologies, including electricity networks, battery storage and electric vehicles (Chandler, 2022). Global efforts to meet the Paris Agreement’s ambition of net-zero emissions by 2050, therefore, would place ‘Africaat the heart of the green energy transition, both in environmental and geopolitical terms’. In addition to their role in the energy transition, these minerals already serve as an important source of revenue for African co

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Fredrickson, Emma, Aaron Goodman, Michael O'Keeffe, and James Ranville. OF-24-11 Reconnaissance Investigation of Critical Minerals in Historic Mine-Related Effluent, Colorado. Colorado Geological Survey, 2025. https://doi.org/10.58783/cgs.2411.zdkt2450.

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Colorado contains an abundance of historic mine-related waste materials, some of which may contain elevated concentrations of critical minerals and other metals. Many of these sites are currently being remediated by several entities including the U.S. Environmental Protection Agency (EPA), Colorado Department of Public Health and Environment (CDPHE), and/or other entities. Metal-laden water flows continuously from some of these acid mine drainage (AMD) sites where it is collected, treated, and discharged to local streams and rivers, depending on its potential impact to human health and the env

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McClenaghan, M. B., W. A. Spirito, S. J. A. Day, M. W. McCurdy, and R. J. McNeil. Overview of GEM surficial geochemistry and indicator mineral surveys and case studies in northern Canada. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330473.

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As part of the Geo-mapping for Energy and Minerals (GEM) program between 2008 and 2020, the Geological Survey of Canada carried out reconnaissance-scale to deposit-scale geochemical and indicator mineral surveys and case studies across northern Canada. In these studies, geochemical methods were used to determine the concentrations of 65 elements in lake sediment, stream sediment, stream water, lake water and till samples across approximately 1,000,000 km2 of northern Canada. State-of the-art indicator methods were used to examine the indicator mineral signatures in regional-scale stream sedime

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Chen, Dongmei, Jianping Ge, Yibo Wang, and Ruihua Ren. The Unfolding Potential of GCC China Collaboration on Critical Minerals. King Abdullah Petroleum Studies and Research Center, 2024. http://dx.doi.org/10.30573/ks--2024-dp47.

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As a clean energy system begins to be implemented worldwide, the demand for critical minerals is expected to increase dramatically in the coming decades. Thus, demonstrating how mineral collaboration benefits the economy is key to building long-term supply resilience and keeping the global energy transition on track.

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Zhou, Jiayi, and André Månberger. Critical Minerals and Great Power Competition: An Overview. Stockholm International Peace Research Institute, 2024. http://dx.doi.org/10.55163/wemj9585.

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With global politics increasingly fractured, states are rushing to secure critical and strategic mineral supply chains. Each state conceptualizes mineral security differently, driven by a mix of imperatives that range from national development and industrial policy to technological and military dominance. Great power competition pervades all of these issue areas, and that competition may also pose risks at the global level: risks for the pace of green transition, risks of geoeconomic escalation and risks of conflict. This report provides an insightful overview of the mineral security policies

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McClenaghan, M. B., W. A. Spirito, S. J. A. Day, M. W. McCurdy, R. J. McNeil, and S. W. Adcock. Overview of Geo-mapping for Energy and Minerals program surficial geochemistry and indicator-mineral surveys and case studies in northern Canada. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331421.

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Abstract (sommario):

As part of the Geo-mapping for Energy and Minerals (GEM) program, which ran from 2008 to 2020, the Geological Survey of Canada carried out reconnaissance-scale to deposit-scale geochemical and indicator-mineral surveys and case studies across northern Canada. In these studies, geochemical methods were used to determine the concentrations of 65 elements in lake-sediment, lake-water, stream-sediment, stream-water, and till samples across approximately 1 000 000 km2 of northern Canada. State-of the-art methods were used to examine the indicator-mineral signatures identified through regional-scale

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