Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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Chemical Composition of the Cretaceous Granitoids and Related Ore Deposits in the Taebaegsan Basin, Korea

태백산분지내 백악기화강암류의 화학조성과 관련광상

  • Lee, Jae Yeong (Department of Geology, Kyungpook National University) ;
  • Lee, In Ho (Department of Geology, Kyungpook National University) ;
  • Hwang, Duk Hwan (Korea Institute of Geology, Mining & materials)
  • 이재영 (경북대학교 자연과학대학 지질학과) ;
  • 이인호 (경북대학교 자연과학대학 지질학과) ;
  • 황덕환 (한국자원연구소)
  • Received : 1996.04.29
  • Published : 1996.06.30
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Abstract

Mineral commodities of metallic ore deposits related to Cretaceous granitoids in the Taebaegsan basin are distinguishable by rock types, diffferenciation index (D.I.) and chemical compositions. Deposits of Fe-Cu are related to granodiorite-quartz monzonite, those of Pb-Zn and W-Mo to granite-granodiorite and granite respectively. The ranges of D.I. of the granitoids are 39~71 for Fe-Cu deposits, 68~81 for Pb-Zn deposits, 78~89 for W-Mo deposits and 91~94 for Mn deposits. Major oxides of $K_2O$, CaO, MgO, FeO and $TiO_2$ and some trace elements and Rb/K, Sr/Ca and Cu/Fe also show distinguishable differences among the Cretaceous granitoids related to various mineral commodities of the ore depsits.

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Acknowledgement

Supported by : 한국과학재단