南星 金鑛山産 에렉트럼의 産狀

• 영문명: Occurrence of Electrum from the Namseong Gold Mine
• 발행기관: 대한자원환경지질학회
• 저자명: Hyun Koo Lee(李鉉具) Sang Jung Kim(金尙中) Seon Gyu Choi(崔善奎)
• 간행물 정보: 『자원환경지질』20권 4호, 223~234쪽, 전체 12쪽
• 주제분류: 자연과학 > 지질학
• 파일형태: PDF
• 발행일자: 1987.08.30

영문 초록

This paper describes the mode of occurrence and mineralogical properties of electrum from the Namseong Gold-Silver deposits, for the purpose of obtaining data on the characteristics of the ore deposits and the behavior of gold and silver during the mineralization. The gangue minerals are quartz, calcite, fluorite. Ore minerals are mainly composed of pyrite, sphalerite, chalcopyrite and galena with minor amount of argentite, electrum, pyrargyrite, native silver and unidenfied mineral(Cu-Fe-Ag-S series). Three stage of mineralization recognized are, from early to later, (I) pyrite-electrum stage (II) sphalerite-chalcopyrite-galena-argentite-electrum stage (III) sulfosalts stage. The filling temperature of fluid inclusions in quartz ranges from 225° to 335℃. The value of sulfur fugacity estimated by means of electrum-tarnish method ranges from 10-11.5 to 10-14 atm. The compositional heterogeneity within a single grain with respect to gold concentration is common in the Namseong electrums Chemical composition of electrum ranges generally between 25~45 atom% Au. Its gold content decreases in late stages of mineralization.

목차

Abstract

서언

주변지질

광상

에렉트럼

유체포유물의 균일화 온도

토론

결론

參考文獻