Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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Skarn Minerals of Samhwa Iron Ore Deposit

삼화 철 광상의 Skarn 광물

  • Chi, Jeong mahn (Dept. of Mining and Mineral Engineering, Inha Univ.) ;
  • Jang, Yoon ho (Dept. of Mining and Energy Engineering, Samchock National Univ.) ;
  • Sung, Il yeong (Dept. of Mining and Energy Engineering, Samchock National Univ.)
  • 지정만 (인하대학교 자원공학과) ;
  • 장윤호 (삼척산업대학교 자원공학과) ;
  • 성일용 (삼척산업대학교 자원공학과)
  • Received : 1994.01.07
  • Published : 1994.10.30
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Abstract

The Samhwa iron ore deposit, which is of typical magnetite skarn type, is located in the Samhwadong area of Donghae city, Kangwon-do, Korea. Skarn minerals are mainly composed of garnet, clinopyroxene, vesuvianite, wollastonite and small amounts of epidote and quartz. The garnets are isotropic $(Ad_{92.82{\sim}98.37})$ or anisotropic andradite $(Ad_{45.30{\sim}75.85})$ and grossular $(Gr_{86.26{\sim}24.47})$, the clinopyroxenes are ferrosalite and salite, Homogenization temperature of gas rich two phase inclusions in garnet are $368{\sim}593^{\circ}C$, and salnities of polyphase inclusions in garnet have 33.9~68.4 equ. NaCl wt. %. Garnet grain often shows composional variation from its core to rim. In other words, Fe and Al contents in garnet vary inversely, which suggest that the variation depends upon $f_{o2}$ during skarn formation.

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