Auriferous mineralization in the Sakoli Group, central India, with particular reference to sulphide-bound gold
Autor: | K. K. Deepa, B. Jose, S. M. S. Sreehari, A. S. Venkatesh, T. Mishra |
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Rok vydání: | 2001 |
Předmět: |
Arsenopyrite
Mineralization (geology) Geochemistry Mineralogy engineering.material Geotechnical Engineering and Engineering Geology Sphalerite Geochemistry and Petrology Galena visual_art Molybdenite Earth and Planetary Sciences (miscellaneous) engineering visual_art.visual_art_medium Pyrite Paragenesis Pyrrhotite Geology |
Zdroj: | Applied Earth Science. 110:103-109 |
ISSN: | 1743-2758 0371-7453 |
DOI: | 10.1179/aes.2001.110.2.103 |
Popis: | Gold mineralization in the Pular-Parsori-Thutanbori belt of the Sakoli Group in central India is hosted predominantly by a felsic volcanic suite of rocks and is associated with quartz-sulphide ±carbonate veins. Both free and submicroscopic or invisible forms of latticebound gold occur. The free gold is found within the shear zone, as either disseminated or fracture-controlled grains within sulphides. Major opaque minerals in this gold-bearing belt include arsenopyrite, pyrrhotite, pyrite, chalcopyrite, sphalerite, galena, molybdenite, magnetite, hematite and scheelite. A three-stage paragenesis been established for these minerals.Mineral chemical analyses of the sulphides reveal the presence of sulphide-bound gold within the belt—the first time such occurrences have been identified in central India. Quantitative spot analyses of individual grains of sulphide indicate high concentrations of lattice-bound gold, which scanning electron micrographs show to be heterogeneously distributed. The substitut... |
Databáze: | OpenAIRE |
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