Possible Carlin-type disseminated gold mineralization in the Mahakoshal fold belt, central India

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• 作者：Talusani ; Reddy V.R.
• 关键词：Gold deposits ; Mahakoshal fold belt ; Dolomites
• 刊名：Ore Geology Reviews
• 出版年：2001
• 出版时间：March, 2001
• 年：2001
• 卷：17
• 期：4
• 页码：241-247
• 全文大小：124 K

文摘

The paper records the first occurrence of dolomite-hosted, disseminated gold mineralization at Barhi and Jhal, in a Late Archean-Early Proterozoic metavolcano-sedimentary belt (Mahakoshal fold belt) in central India. Gold mineralization is hosted by dolomite that occurs as discontinuous bands interbedded with phyllite. Hydrothermal alteration styles of the host rock include decalcification, silicification, and argillization. Pyrite is the most common sulfide, whereas stibnite and realgar are rare. Mineralization is characterized by persistent gold from 0.20 to 0.62 ppm and a consistent association of anomalous arsenic, antimony, and mercury with gold.