Gold Mineralization of Wau Area in Papua New Guinea

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2009 Vol.46, Issue 5 Preview Page Next Page

Gold Mineralization of Wau Area in Papua New Guinea 파푸아 뉴기니 와우지역의 금광화작용: 허철호, 김남원, 심권용
Chul Ho Heo, Nam Won Kim and Gwon Yong Shim

31 October 2009. pp. 536-545

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Abstract

Geology of Wau area consists of Kaindi metasedimentary rock and Edie porphyry. This exploration aims to elucidate the eluvial placer deposit with gold-bearing quartz vein. Considering the morphology of gold grain, fineness and occurrence mode, it is thought that the primary deposit is located near compared with the eluvial placer deposit. And, in order to elucidate the temperature, composition and pressure condition of ore- forming fluid, we practiced the fluid inclusion study on the quartz vein within trench. Homogenization temperature of primary inclusions ranges from 150 to 256℃ with the salinities of 0.2 to 7.2 wt.% NaCl equivalents. As a result of EPMA analysis of placer gold grain, fineness ranges from 432 to 610, indicating the epithermal environment.

Keywords

Gold

Mineralization

Wau Area

Papua New Guinea

파푸아 뉴기니 와우 지역의 지질은 카인디 변성퇴적암과 에디 반암으로 구성된다. 금번 조사는 함금석영맥을 배태한 잔적사광상을 탐사대상으로 하였다. 금립의 형태, 순도, 산출양상을 검토하여 보면 원암에서의 이동거리가 비교적 가까운 양상을 보인다. 광화유체의 온도, 조성 및 압력조건을 파악하기 위하여 석영맥에서 산출되는 유체포유물을 대상으로 가열 및 냉각실험을 실시한 결과, 초생포유물의 균일화온도 범위는 150～256℃이며, NaCl상당 염농도의 범위는 0.2～7.2 wt.%로 나타났다. 사금립에 대한 전자현미분석결과 순도가 432～610의 값을 보여 본역의 열수광상은 천열수환경에서 생성되었음을 추정할 수 있다.

키워드

금

광화작용

와우 지역

파푸아 뉴기니

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