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Geology and Mineralization in Constancia Porphyry Cu-Mo Mine, Cusco State, Southeastern Peru

페루 남동부 쿠스코주 콘스탄시아 반암동-몰리브데늄 광산의 지질 및 광화작용

  • Yang, Seok-Jun (Mineral Resources Technology Research team, Convergence Research Center for Development of Mineral Resources, Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Heo, Chul-ho (Mineral Resources Department, Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
  • 양석준 (한국지질자원연구원 DMR융합연구단 광물자원기술연구팀) ;
  • 허철호 (한국지질자원연구원 광물자원연구본부 광물자원연구실)
  • Received : 2016.03.25
  • Accepted : 2016.06.22
  • Published : 2016.06.28

Abstract

Constancia mine is a deposit developed within Andahuaylas-Yauri Cu-Mo-Au metallogenic belt, southeastern Peru and is located in the southwestern part of Abancay deformation zone structurally as the porphyry copper deposit type. Mineralized zone in Constancia mine are composed of leached zone, secondary enrichment zone(ca. 1% Cu), mixed zone, primary mineralized zone(ca. 0.5%), skarn zone(ca. 1.5% Cu) from the upper part. Main country rock is monzonitic porphyry. Leached zone are characterized by the precipitation of limonite and looks brown in the outcrop. Oxidized zone have green due to the occurrence of copper oxide and secondary enrichment zone are characterized by the occurrence of chalcocite. Skarn zone are characterized by the occurrence of magnetite and garnet. Now, Hudbay, Canadian mining company, have 100% share about Constancia mine and started to produce commercially from January, 2015.

콘스탄시아 광산은 페루 남동부 안다우아이라스-야우리 Cu-Mo-Au 광화대 내에 발달하는 광상으로서, 구조적으로는 아방까이 변형대의 남서쪽에 위치하며 반암동광형태로 부존한다. 콘스탄시아 광산의 광화대는 상부로부터 용탈대, 2차부화대(약 1% Cu), 혼합대, 초생광화대(약 0.5%), 스카른대(약 1.5% Cu)로 구성되어 있다. 주요 모암은 몬조니 반암이다. 용탈대는 갈철석 침전이 특징적이며 노두상에서는 갈색으로 보인다. 스카른대는 자철석과 석류석의 산출이 특징적이다. 현재 콘스탄시아 광산은 캐나다의 Hudbay사가 100% 지분을 보유하고 있으며, 2015년 1월부터 상용생산을 시작하였다.

Keywords

References

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