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Occurrence of Gold Deposits of the Tumbang Lapan Area of the Middle Kalimantan, Indonesia  

Kim In-Joon (Korea Institute of Geoscience and Mineral Resources)
Publication Information
Economic and Environmental Geology / v.38, no.3, 2005 , pp. 347-353 More about this Journal
Abstract
The geology of the Tumbang Lapan area consists of Permian to Carboniferous metamorphic rocks, Cretaceous granitic rocks, and Permian to Tertiary sedimentary and volcanic rocks. Three faults are developed in surveyed area, and are functioned as channels of the hydrothermal solution which farmed quartz veins within tuff3. In the mineralized area, argillic and propylitic alterations are dominant. Argillic altered rocks show the alteration mineral assemblages of kaolinte+sericite+quartz+chlorite+pyrite. Mineral association in propylitic alteration is chlorite+epidote+feldspar+quartz+pyrite+ magnetite. Vein type, fracture filling, stockwork are observed in survey area. As a result of analysis of samples from quartz veins and altered rocks, some mineralized rocks showed $0.01\~4.6g/t$ of gold.
Keywords
strike-slip fault; hydrothermal solution; alteration; alteration mineral assemblage; gold deposit;
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  • Reference
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