Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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Mode of Occurrences and Depositional Conditions of Sb, Bi Sulfosalt Minerals from South Ore Deposits, Dunjeon Gold Mine

둔전금광산(屯田金鑛山) 남광상(南鑛床)에서 산출(産出)되는 Sb, Bi 유염광물(硫鹽鑛物)의 산출상태(産出狀態)와 생성환경(生成環境)

  • Park, Hee-In (Department of Geological Sciences, Seoul National University) ;
  • Lee, Chan Hee (Department of Geological Sciences, Seoul National University)
  • Received : 1991.12.21
  • Published : 1992.02.28
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Abstract

South ore deposits of the Dunjeon gold mine is a fissure-filling vein emplaced in the Cretaceous granodiorite, skarnized and/or hornfelsified Ordovician Dumudong Formation. Mineralization can be divided into three distinct depositional stages on the basis of vein structure and mineral assemblages. Sb, Bi sulfosalts minerals, such as tetrahedrite, bournonite, boulangerite, cosalite, lillianite, heyrovskyite, unknown Pb-Bi-Sb-S mineral, native Sb, native Bi and Au-Ag minerals are mainly deposited in stage II. The formation temperature and sulfur fugacties of Sb, Bi minerals in the stage II deduced from thermodynamic considerations are from $172^{\circ}$ to $378^{\circ}C$ and $10^{-10.6}$ to $10^{-19.4}$ atm. Those temperatures are good agreement with temperature data obtained by fluid inclusion study which has reported already.

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