Economic and Environmental Geology (자원환경지질)
- Volume 19 Issue spc
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- Pages.227-237
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- 1986
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
Grain Size and Texture of Silver Minerals from Duk-Eum Ore Deposits
덕음광산(德音鑛山) 은광물(銀鑛物)의 입도(粒度)와 조직(組織)
Abstract
The Duk-Eum mine located in Kongsan-myeon, Naju-gun, Cheolanamdo is producing silver ore mainly, with rare gold association. The grade-up and recovery of the concentrates have been concerned to the main problem. And then, this study aimed at applying the basic data for ore processing. In the first half of the study, the attempts were made to identify the ore minerals, this followed by determination of the mineral texture, paragenesis, grain size, and size distribution by employing the microscopical method and the etching test. The results of the study are as follows: 1. The ore deposit is composed of the hydrothermal fissure linked veins, and filling cavities are mostly tensile fractures or joints, in rhyolitic rocks as a wall rock. 2. The principle ore minerals are native silver, acanthite, canfieldite, pyrargyrite, galena, tetrahedrite, sphalerite, pyrrhotite, chalcopyrite, chalcocite, covellite, zincite, and the gangue minerals are quartz and calcite. 3. The grain size of each ore minerals before grinding are; max.
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