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Статті в журналах з теми "Ore petrology"

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Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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1

Böhnel, H., J. F. W. Negendank, and J. Urrutia-Fucugauchi. "Palaeomagnetism and ore petrology of three Cretaceous-Tertiary batholiths of southern Mexico." Neues Jahrbuch für Geologie und Paläontologie - Monatshefte 1988, no. 2 (February 1, 1988): 97–127. http://dx.doi.org/10.1127/njgpm/1988/1988/97.

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2

Trunilina, V. A., and S. P. Roev. "Petrology and Ore Content of Magmatic Formations of the Ukachilkan Ore Field (Northeast Yakutia)." ARCTIC AND SUBARCTIC NATURAL RESOURCES 23, no. 1 (2018): 16–29. http://dx.doi.org/10.31242/2618-9712-2018-23-1-16-29.

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3

Petrova, Natalia S., Natalia Yu Denisova, and Aliaksei V. Kirykovich. "Microfabric characteristics of potash ore of the Pripyat potash-bearing basin." Journal of the Belarusian State University. Geography and Geology, no. 1 (June 20, 2019): 82–94. http://dx.doi.org/10.33581/2521-6740-2019-1-82-94.

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Анотація:

The requirements of complex subsoil use are increasing in the Pripyat potash-bearing basin: potash ore of new technologic types, with lower contents of useful components, increased concentrations of harmful impurities. Using all complex of quality indicators assessment of natural types of potash ore is undoubtedly prioritized by characteristic of potash deposits. The study of structural and textural features and composition of potash deposits has been given attention since the time of discover of the Starobin deposit. Systematic study of salt rock petrology has been started after the discovery of the Starobin deposit. Until now in the petrology, there is no recognized rational genetic classification of the structures of salt rocks being potash (potassium-magnesium) ore. The name of certain structure is based on the secondary features that are brightly expressed, color or similarity with different objects. The aim of the present work is an element recognition of the primary sedimentary features of rocks, systematization of primary and secondary characteristics and their typification according to petrochemical parameters. In the article the main microfabric types of potash ore that are typical for the deposits of red-colored and mottled hypersaline association of the Pripyat basin.

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4

Peng, Zhenan, Makoto Watanabe, Kenichi Hoshino, and Yasuhiro Shibata. "Ore mineralogy of tin-polymetallic (Sn-Sb-FePb-Zn-Cu-Ag) ores in the Dachang tin field, Guangxi, China and their implications for the ore genesis." Neues Jahrbuch für Mineralogie - Abhandlungen 175, no. 2 (December 1, 1999): 125–51. http://dx.doi.org/10.1127/njma/175/1999/125.

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5

Barnes, Steve, and Rais Latypov. "‘From Igneous Petrology to Ore Genesis’: an Introduction to this Thematic Issue ofJournal of Petrology." Journal of Petrology 56, no. 12 (December 2015): 2295–96. http://dx.doi.org/10.1093/petrology/egv081.

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6

Vladykin, N. V. "Potassium alkaline lamproite-carbonatite complexes: petrology, genesis, and ore reserves." Russian Geology and Geophysics 50, no. 12 (December 2009): 1119–28. http://dx.doi.org/10.1016/j.rgg.2009.11.010.

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7

Sen, Ranen, Arindam Sarkar, Snigdha Banerjee, and D. J. Spottiswood. "Characterisation of a complex lateritic ore by Mossbauer spectroscopy and its relevance in beneficiation of the ore." Neues Jahrbuch für Mineralogie - Monatshefte 2002, no. 7 (July 10, 2002): 319–34. http://dx.doi.org/10.1127/0028-3649/2002/2002-0319.

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8

Distler, V. V., V. V. Kryachko, and M. A. Yudovskaya. "Ore petrology of chromite-PGE mineralization in the Kempirsai ophiolite complex." Mineralogy and Petrology 92, no. 1-2 (November 13, 2007): 31–58. http://dx.doi.org/10.1007/s00710-007-0207-3.

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9

Hao, Hongda, Ian H. Campbell, Jeremy P. Richards, Eizo Nakamura, and Chie Sakaguchi. "Platinum-Group Element Geochemistry of the Escondida Igneous Suites, Northern Chile: Implications for Ore Formation." Journal of Petrology 60, no. 3 (February 1, 2019): 487–514. http://dx.doi.org/10.1093/petrology/egz004.

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10

Wang, Baode, Shuyin Niu, Aiqun Sun, Yan Xie, Yi Luo, Hailong Liu, and Yanhua Wang. "Endogenic Au-Ag polymetallic ore deposits and ore-bearing potentiality of strata." Chinese Journal of Geochemistry 29, no. 4 (October 28, 2010): 407–15. http://dx.doi.org/10.1007/s11631-010-0473-3.

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11

Zhang, Zhenliang, Zhilong Huang, Tao Guan, Zaifei Yan, and Derong Gao. "Study on the multi-sources of ore-forming materials and ore-forming fluids in the Huize lead-zinc ore deposit." Chinese Journal of Geochemistry 24, no. 3 (July 2005): 243–52. http://dx.doi.org/10.1007/bf02871317.

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12

Leijd, M., K. Sundblad, and E. Kontar. "Ore petrology of volcanogenic massive sulphide ores in the Ural Mountains, Russia." GFF 118, sup004 (October 1996): 45. http://dx.doi.org/10.1080/11035899609546320.

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13

Powolny, Tomasz, and Magdalena Dumańska-Słowik. "Review of existing systems of jaspers nomenclature and classification in Poland and worldwide." Gospodarka Surowcami Mineralnymi 33, no. 2 (June 27, 2017): 43–52. http://dx.doi.org/10.1515/gospo-2017-0011.

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Анотація:

Abstract Nowadays, the term “jasper” is variably defined in petrology and gemology. The unification of the nomenclature and the classification of jaspers seems to be an essential challenge for petrologists worldwide. This misnomer is very commonly used among sellers or collectors of various gemstones. Therefore, a huge diversity in the mineralogical composition, geological settings and genesis of particular “spotted stones” is reported. In this paper the term “jasper” is proposed for all “spotted stones” which have technical properties that make them useful for jewelry and in the production of small stone accessories. Nevertheless, the introduction and approval of the term “true jasper” for rocks of hydrothermal- metasomatic origin and metamorphosed volcanogenic-sedimentary products to petrologic nomenclature is recommended. Different types of jaspers and related rocks have various economic significance. Jaspers or jasper-like rocks are decorative gemstones applied in jewelry, whereas others may be used as refractory materials or feldspar raw materials. In contrast, the petrographic research of jasperoids is useful during prospecting new ore deposits.

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14

Trunilina, Vera A., and Andrei V. Prokopiev. "Petrology of Granites of the Tommot Rare-Earth Ore Field (Verkhoyansk–Kolyma Orogenic Belt)." Minerals 12, no. 11 (October 24, 2022): 1347. http://dx.doi.org/10.3390/min12111347.

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The article presents the results of studying the aegirine–arfvedsonite granites of the Somnitelnyi massif within the Tommot ore field located in the Verkhoyansk–Kolyma orogenic belt (NE Asia). Along with the crustal signatures, the rocks display features of mantle contamination at their origin. Their affinity for A-type granites characteristic of continental rifts and hot spots is shown. The associated Tommot REE deposit is the only one discovered in NE Russia. New data are presented for the previously studied Tommot massif within the same ore field, with a wide compositional range from alkaline-ultrabasic rocks to alkaline syenites. It is established that despite a common geochemical enrichment of both massifs’ rocks with REEs, the Somnitelnyi massif granites cannot be interpreted as the final phase of the Tommot massif emplacement. Specific REE mineralization and high crystallization temperatures (up to 1045 °C) of the Somnitelnyi granites may be explained by the existence within the study area of an undepleted mantle source (“hot spot”), whose maximum activity occurred during the granitic melt generation. The ore bodies of the Tommot deposit consist of fenitized albitites, granite gneisses, and, more rarely, the cross-cutting pegmatite veins. They are confined mostly to exocontacts of the Somnitelnyi massif, are less often in its endocontacts, and are not found in the host rocks and in the inner part of the massif away from the contacts. Principal ore minerals are chevkinite, yttrialite, gadolinite, and fergusonite. Based on the data obtained, the deposit is classified as a metasomatic complex Ce–Y–Nb–Zr deposit associated with the alkaline granites.

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15

White, Alistair J. R., Raymond E. Smith, Patrick Nadoll, and Monica Legras. "Regional-scale Metasomatism in the Fortescue Group Volcanics, Hamersley Basin, Western Australia: Implications for Hydrothermal Ore Systems." Journal of Petrology 55, no. 5 (April 12, 2014): 977–1009. http://dx.doi.org/10.1093/petrology/egu013.

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16

Robertson, Jesse C., Stephen J. Barnes, and Margaux Le Vaillant. "Dynamics of Magmatic Sulphide Droplets during Transport in Silicate Melts and Implications for Magmatic Sulphide Ore Formation." Journal of Petrology 56, no. 12 (December 2015): 2445–72. http://dx.doi.org/10.1093/petrology/egv078.

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17

Kühnel, R. A. "Atlas of ore minerals." Chemical Geology 51, no. 1-2 (October 1985): 147–48. http://dx.doi.org/10.1016/0009-2541(85)90094-4.

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18

Philpotts, John A. "Ore elements in arc lavas." Geochimica et Cosmochimica Acta 59, no. 20 (October 1995): 4324. http://dx.doi.org/10.1016/0016-7037(95)90196-5.

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19

Barton, Paul B. "Ore textures: problems and opportunities." Mineralogical Magazine 55, no. 380 (September 1991): 303–15. http://dx.doi.org/10.1180/minmag.1991.055.380.02.

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Анотація:

AbstractOver the past several decades, thinking about chemical processes in rocks had been dominated by experimental and theoretical treatments of mineral equilibrium, which is the state from which the time variable has been excluded. But, to an extent exceeding that of any of our sister sciences, we in geology are concerned with the behaviour of things as a function of time; thus equilibrium is but one of several interesting boundary conditions. Textures, (defined as the spatial relations within and among minerals and fluids, regardless of scale or origin) provide a means to sort out and identify successive states. In fact, it is the pattern of evolution of those states that enables us to deduce the processes. We may well draw the analogy with thermodynamics and kinetics, respectively:equilibrium textures and phase assemblages, via thermodynamic analysis → definition of conditions of equilibration,whereaskinetics, as displayed in disequilibrium textures → sequence of events and processes of mineralization.The interpretation of textures is one of the most difficult yet important aspects of the study of rocks and ores, and there are few areas of scientific endeavour that are more subject to misinterpretation. Although the difficulties are many, the opportunites for new understanding are also abundant. Textural interpretations have many facets: some are well established and accepted; some that are accepted may be wrong; others are recognised to be speculative and controversial; and we trust that still other textural features remain to be described and interpreted. This paper will deal principally with low-temperature, epigenetic ore deposits, and will emphasise silica and sphalerite; but extension to other materials is not unreasonable.Ore and gangue minerals react internally, or with their environment, at widely ranging rates, ranging from the almost inert pyrite, arsenopyrite, well-crystallised quartz, and tourmaline to the notoriously fickle copper/iron and copper/silver sulfides. Arrested or incomplete reactions may be identifed by textural criteria and, when appropriately quantified, can provide guides to the duration of geological processes.In recent years so much emphasis has been placed on isotopes, fluids, chemistry, and deposit and process models that the textural features have been ignored. In part this oversight occurs because we have grown accustomed to using superposition, cross-cutting, pseudomorphism, mutual intergrowths, exsolution and so on as off-the-shelf tools, to be grasped and applied without evaluation or even description. Surely science must build on previous work without constant and exhaustive reassessment, but for mineral textures a little reassessment may yield substantial benefit.

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20

Rose, Arthur W. "An Introduction to Ore Geology." Geochimica et Cosmochimica Acta 52, no. 6 (June 1988): 1741. http://dx.doi.org/10.1016/0016-7037(88)90244-x.

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21

Gordienko, I. V., R. A. Badmatsyrenova, V. S. Lantseva, and A. L. Elbaev. "Selenga Ore District in Western Transbaikalia: Structural–Minerogenic Zoning, Genetic Types of Ore Deposits, and Geodynamic Settings of Ore Localization." Geology of Ore Deposits 61, no. 5 (September 2019): 391–421. http://dx.doi.org/10.1134/s1075701519050027.

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22

Gamarra-Urrunaga, J. E., R. Castroviejo, and H. J. Bernhardt. "Preliminary mineralogy and ore petrology of the intermediate-sulfidation Pallancata Deposit, Ayacucho, Peru." Canadian Mineralogist 51, no. 1 (February 1, 2013): 67–91. http://dx.doi.org/10.3749/canmin.51.1.67.

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23

Shayestehfar, M. R., A. Zarrabi, A. Sharafi, and A. Yazdi. "Petrology, petrography and mineralographical studies of “Choghart Iron Ore Mine”, Bafgh area, Iran." Geochimica et Cosmochimica Acta 70, no. 18 (August 2006): A578. http://dx.doi.org/10.1016/j.gca.2006.06.1072.

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24

Laznicka, Peter. "Ore deposit models." Ore Geology Reviews 6, no. 6 (December 1991): 581–82. http://dx.doi.org/10.1016/0169-1368(91)90048-c.

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25

Wolf, K. H. "Uranium ore deposits." Ore Geology Reviews 9, no. 3 (August 1994): 253–54. http://dx.doi.org/10.1016/0169-1368(94)90011-6.

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26

Zhang, Jing, Yanjing Chen, Fuxin Zhang, and Chao Li. "Ore fluid geochemistry of the Jinlongshan Carlin-type gold ore belt in Shaanxi Province, China." Chinese Journal of Geochemistry 25, no. 1 (January 2006): 23–32. http://dx.doi.org/10.1007/bf02894793.

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27

Dehui, Zhang, Yu Chongwen, Bao Zhengyu, and Tang Zhonghua. "Ore zoning and dynamics of ore-forming processes of Yinshan polymetallic deposit in Dexing, Jiangxi." Chinese Journal of Geochemistry 16, no. 2 (April 1997): 123–32. http://dx.doi.org/10.1007/bf02843390.

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28

Márquez-Zavalía, María Florencia, and James R. Craig. "Tellurium and precious-metal ore minerals at Mina Capillitas, Northwestern Argentina." Neues Jahrbuch für Mineralogie - Monatshefte 2004, no. 4 (March 31, 2004): 176–92. http://dx.doi.org/10.1127/0028-3649/2004/2004-0176.

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29

Damyanov, Z. K. "Ore petrology, whole-rock chemistry and zoning of the Kremikovtsi carbonate-hosted sedimentary exhalative iron(+Mn)-barite-sulfide deposit, Western Balkan, Bulgaria." Neues Jahrbuch für Mineralogie - Abhandlungen 174, no. 1 (July 29, 1998): 1–42. http://dx.doi.org/10.1127/njma/174/1998/1.

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30

Xu, Lei-Luo, Xian-Wu Bi, Rui-Zhong Hu, Yong-Yong Tang, Xin-Song Wang, Ming-Liang Huang, Ying-Jing Wang, Rui Ma, and Gong Liu. "Contrasting whole-rock and mineral compositions of ore-bearing (Tongchang) and ore-barren (Shilicun) granitic plutons in SW China: Implications for petrogenesis and ore genesis." Lithos 336-337 (July 2019): 54–66. http://dx.doi.org/10.1016/j.lithos.2019.03.031.

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31

Mashkovtsev, G. A., and V. N. Shchetochkin. "Problems of ore genesis." Lithology and Mineral Resources 43, no. 4 (July 2008): 314–17. http://dx.doi.org/10.1134/s0024490208040032.

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32

Khomichev, V. L. "“ORE MAGMA”. WHAT IS IT FROM THE STANDPOINT OF THE GRANITE ORE-MAGMATIC SYSTEM?" Geology and mineral resources of Siberia, no. 4 (December 2021): 79–85. http://dx.doi.org/10.20403/2078-0575-2021-4-79-85.

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The concept of “ore magma” remains an obscure hypothesis in ore formation. The article considers the process of natural overgrowth of trivial primary basaltic magma into an ore-bearing granite melting and further into the ore-forming “ore magma” as the concentration of volatile and ore components. The dark side of the problem lies in the fact that during the ore formation the “ore magma” liquates into contrasting phases and leaves practically no traces of itself (with rare exceptions). But the concept of the ore magma has received a logical scientific justification from the standpoint of ore-magmatic systems.

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33

Barnes, Stephen J., Margaux Le Vaillant, Belinda Godel, and C. Michael Lesher. "Droplets and Bubbles: Solidification of Sulphide-rich Vapour-saturated Orthocumulates in the Norilsk-Talnakh Ni–Cu–PGE Ore-bearing Intrusions." Journal of Petrology 60, no. 2 (December 19, 2018): 269–300. http://dx.doi.org/10.1093/petrology/egy114.

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34

Wilkinson, J. J. "Fluid inclusions in hydrothermal ore deposits." Lithos 55, no. 1-4 (January 2001): 229–72. http://dx.doi.org/10.1016/s0024-4937(00)00047-5.

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35

Kogarko, L. N. "Ore-forming potential of alkaline magmas." Lithos 26, no. 1-2 (December 1990): 167–75. http://dx.doi.org/10.1016/0024-4937(90)90046-4.

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36

Skinner, Brian J. "INTRODUCTION TO ORE-FORMING PROCESSES,." American Mineralogist 90, no. 1 (January 2005): 276.1–276. http://dx.doi.org/10.2138/am.2005.426.

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37

Hagemann, Steffen, Jose Carlos Frantz, and Hardy Jost. "Selected ore deposits of Brazil." Mineralium Deposita 43, no. 2 (January 11, 2008): 127–28. http://dx.doi.org/10.1007/s00126-007-0174-y.

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38

Shilo, N. A., and A. V. Drinkov. "The physics of ore formation." Geology of Ore Deposits 50, no. 4 (August 2008): 320–34. http://dx.doi.org/10.1134/s1075701508040041.

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39

Wolf, Karl H. "Geochemistry of sedimentary ore deposits." Chemical Geology 48, no. 1-4 (March 1985): 355–59. http://dx.doi.org/10.1016/0009-2541(85)90058-0.

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40

MingJun, TIAN, LI YongGang, MIAO LaiCheng, ZHANG Yu, GAO TingTing, GUO JingHui, XUE JunZhao, and HE Bin. "Alteration and mineralization zoning, ore textures and ore-forming process of Yongping copper deposit, Jiangxi Province." Acta Petrologica Sinica 35, no. 6 (2019): 1924–38. http://dx.doi.org/10.18654/1000-0569/2019.06.18.

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41

Gaspar, O., and A. Pinto. "The ore textures of the Neves-Corvo volcanogenic massive sulphides and their implications for ore beneficiation." Mineralogical Magazine 55, no. 380 (September 1991): 417–22. http://dx.doi.org/10.1180/minmag.1991.055.380.11.

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Анотація:

AbstractThe Neves-Corvo mine opened officially in December 1988 and it is already the biggest producer of copper in the Iberian Pyrite Belt (IPB). Tin production started in 1990. The ore deposits of the IPB are related to felsic submarine volcanism which developed during the lower Tournaisian to the middle Visean. At the end of the first phase of Hercynian deformation in the middle Westphalian, the ore deposits were affected by low-pressure metamorphism producing schistosity and prehenite-pumpellyite greenschist facies assemblages in the volcanogenic sediments of the IPB.The unique nature of the mineralogy of the Neves-Corvo deposit compared with other IPB deposits is mainly a result of the introduction of later Cu-rich hydrothermal solutions to the primitive ore pile and the presence of tin mineralisation. The cupriferous ores are rich in tetrahedrite-tennantite, stannite, kesterite, stannoidite and mawsonite.Cassiterite occurs in Neves-Corvo: (a) as thin layers of euhedral crystals in cupriferous ores, partially replaced by chalcopyrite; (b) in the schistosity of a banded black shale chalcopyrite hanging wall formation; (c) as metre-sized lenses of massive cassiterite overlying the cupriferous ores.The ore textures at Neves-Corvo are complex, due to intergrowths of fine colloform pyrite with the base metal minerals. Because of the low grade of metamorphism, colloform, geopetal and soft-sediment diagenetic features are preserved in the ‘complex ores’. These ‘complex ores’ have contents of 0.5% Cu, 1% Pb and 5.5% Zn. In copper-rich ores (7.9% Cu and 1.4% Zn), replacement of the primary ore by chalcopyrite has obliterated most of these textures and produced fine chalcopyrite-tetrahedrite-pyrite intergrowths. The textures clearly indicate the genesis of these ores but they impose a practical problem in recovery of the metals. There is no clear correlation between these textures and the ore classification used at the mine, but an understanding of the textures is vital since the ‘complex ores’ require fine grinding to achieve liberation and the fine grinding adversely affects the froth flotation processing of the ore.The implications of the complex sulphide textures for ore beneficiation have been studied using reflected light microscopy, with determination of modal analyses and grain-size distributions of free particles and middlings from concentrates and tailings.The outcome of a one-year intensive study is that the ore microscopy laboratory at the mine now produces daily information about the textures of the feed ores so that metallurgical engineers can optimise the performance of the ore dressing plant.

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42

Tarasov, N. N., B. T. Kochkin, V. I. Velichkin, and O. A. Doynikova. "Deposits of the Hiagda Uranium Ore Field, Buryatia: Formation Conditions and Ore Control Factors." Geology of Ore Deposits 60, no. 4 (July 2018): 347–54. http://dx.doi.org/10.1134/s1075701518040050.

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43

Donskoi, Eugene, Sarath Hapugoda, James Robert Manuel, Andrei Poliakov, Michael John Peterson, Heinrich Mali, Birgit Bückner, Tom Honeyands, and Mark Ian Pownceby. "Automated Optical Image Analysis of Iron Ore Sinter." Minerals 11, no. 6 (May 25, 2021): 562. http://dx.doi.org/10.3390/min11060562.

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Sinter quality is a key element for stable blast furnace operation. Sinter strength and reducibility depend considerably on the mineral composition and associated textural features. During sinter optical image analysis (OIA), it is important to distinguish different morphologies of the same mineral such as primary/secondary hematite, and types of silico-ferrite of calcium and aluminum (SFCA). Standard red, green and blue (RGB) thresholding cannot effectively segment such morphologies one from another. The Commonwealth Scientific Industrial Research Organization’s (CSIRO) OIA software Mineral4/Recognition4 incorporates a unique textural identification module allowing various textures/morphologies of the same mineral to be discriminated. Together with other capabilities of the software, this feature was used for the examination of iron ore sinters where the ability to segment different types of hematite (primary versus secondary), different morphological sub-types of SFCA (platy and prismatic), and other common sinter phases such as magnetite, larnite, glass and remnant aluminosilicates is crucial for quantifying sinter petrology. Three different sinter samples were examined. Visual comparison showed very high correlation between manual and automated phase identification. The OIA results also gave high correlations with manual point counting, X-ray Diffraction (XRD) and X-ray Fluorescence (XRF) analysis results. Sinter textural classification performed by Recognition4 showed a high potential for deep understanding of sinter properties and the changes of such properties under different sintering conditions.

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44

Tămaș, Călin G., Nicolae Har, Ioan Mârza, and Ioan Denuț. "The black calcite and its mineral assemblage in Herja ore deposit, Romania." European Journal of Mineralogy 30, no. 6 (December 20, 2018): 1141–53. http://dx.doi.org/10.1127/ejm/2018/0030-2779.

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45

Poudel, Lalu, and Sujan Devkota. "Petrology and Genesis of the Bhainskati Iron Ore Deposit of Palpa District, Western Nepal." Tribhuvan University Journal 28, no. 1-2 (December 2, 2013): 153–60. http://dx.doi.org/10.3126/tuj.v28i1-2.26237.

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The Bhainskati Formation of the Tansen Group in Palpa area is known for hematite iron ore deposit for long time. A prominent band of hematite of about 1-2 km thickness extending >5 km was identified in the upper part of the Bhainskati Formation in the present study and the band is repeated three times in the area by folding and faulting. Petrographic study shows that it is oolitic ironstone of sedimentary shallow marine origin. Main minerals in the band are hematite, goethite, quartz, calcite, siderite and albite. Hematite content varies considerably among samples and occurs mainly as oolite and cement. The Bhainskati ironstone with its ferrous mineral assemblage and well-rounded texture of the ooids suggests prodeltaicto estuarine with shallow marine environment reduced clastic input.

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46

Dilles, John H. "Petrology of the Yerington Batholith, Nevada; evidence for evolution of porphyry copper ore fluids." Economic Geology 82, no. 7 (November 1, 1987): 1750–89. http://dx.doi.org/10.2113/gsecongeo.82.7.1750.

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47

Devkota, Sujan, and Lalu Prasad Paudel. "Petrology and genesis of the Bhainskati iron ore deposit of Palpa District, western Nepal." Bulletin of the Department of Geology 15 (January 21, 2013): 63–68. http://dx.doi.org/10.3126/bdg.v15i0.7418.

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Анотація:

The Bhainskati Formation of the Tansen Group in the Palpa area is known for hematite iron ore deposit for long time. A prominent band of hematite of about 1-2 m thickness and extending >5 km was identified in the upper part of the Bhainskati Formation in the present study. The band is repeated three times in the area by folding and faulting. Petrographic study shows that it is oolitic ironstone of sedimentary origin. Main minerals in the band are hematite, goethite, quartz, calcite, siderite and albite. Hematite content varies considerably among samples and occurs mainly as oolite and cement. The Bhainskati ironstone with its ferrous mineral assemblage and well-rounded texture of the ooids suggests shallow marine environment (prodeltaic to estuarine) with reduced clastic input. DOI: http://dx.doi.org/10.3126/bdg.v15i0.7418 Bulletin of the Department of Geology, Vol. 15, 2012, pp. 63-68

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48

MYTROKHYN, O. V., V. G. BAKHMUTOV, O. L. MARUSHCHENKO, O. V. ANDREYEV, and O. A. KHLON. "Petrology, Mineralogy and Ore Potential of the Barchans-Forge Granitoids (Argentine Islands, West Antarctica)." Mineralogical Journal 42, no. 2 (2020): 32–45. http://dx.doi.org/10.15407/mineraljournal.42.02.032.

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49

CHENG, Yongsheng, and Cheng PENG. "Petrology and Geochemistry of Liujiang Formation Siliceous Rock in Dachang Ore District, Guangxi, China." Acta Geologica Sinica - English Edition 88, s2 (December 2014): 77–78. http://dx.doi.org/10.1111/1755-6724.12368_4.

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50

Gusev, Anatoly, and Nikolay Gusev. "New data on absolute age, petrology and potential of ore mineralization within Murzinsky intrusive massif (northwestern Altai)." Domestic geology, no. 6 (January 22, 2021): 68–79. http://dx.doi.org/10.47765/0869-7175-2020-10031.

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The geological, petrogeochemical data, absolute age dating and information about endogenetic ore mineralization of Murzinsky intrusive massif of Altai are presented. Comparison of rock compositions and melanocratic inclusions suggests that gold potential of deep spot melting is related to hybrid melts forming as basalt and crust acidic magma mixed. Along with skarn, the ore field could host copper-gold-porphyry mineralization. Gold was supplied from acidic melting as a result of amphibolites and lower crust greywacke melting.

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