Economic and Environmental Geology (자원환경지질)
- Volume 24 Issue 4
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- Pages.363-378
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- 1991
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
Genesis of Talc Ore Deposits in the Yesan Area of Chungnam, Korea
충남(忠南) 예산지구(禮山地區) 활석광상(滑石鑛床)의 성인(成因)에 관(關)한 연구(硏究)
- Woo, Young-Kyun (Department of Earth Science Education, Kongju National University) ;
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Choi, Suck-Won
(Department of Earth Science Education, Kongju National University) ;
- Park, Ki-Hwa (Metallic Minerals Division, Korea Institute of Energy and Resources)
- Received : 1991.08.23
- Published : 1991.08.31
Abstract
Field and microscopic evidence, XRD,EPMA and chemical data suggest that parent rock of talc ore deposits of Yesan district was originated from ultramafic igneous rock. Parent rock can be divided into serpentinized dunite, serpentinized peridotite, metagabbro, amphibolite and hornblende schist. The ore deposits are highly sheared, and show many evidences of hydrothermal alteration and metamorphism at the greenschist and albite-epidote amphibolite facies. The process of steatitization is variable depending upon the composition, and the degree of alteration and metamorphism of the parent rocks. Steatitization can be divided into two processes with or without serpentinization. The parent rocks with serpentinization are serpentinized dunite, serpentinized peridotite and metagabbro, showing the following alteration process; olivine
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