多德鑛山 楓井脈의 金銀鑛化作用

• 영문명: Gold and Silver Mineralization of the Pungjeong Vein, Dadeok Mine
• 발행기관: 대한자원환경지질학회
• 저자명: Hee In Park(朴喜寅) Suck Won Choi(崔錫源) Sang Sun Lee(李相善)
• 간행물 정보: 『자원환경지질』21권 3호, 269~276쪽, 전체 8쪽
• 주제분류: 자연과학 > 지질학
• 파일형태: PDF
• 발행일자: 1988.06.30

영문 초록

Ore deposits of Dadeok mine, the largest in the Bonghwa gold mining district, are composed of numerous gold and silver-bearing quartz veins emplaced in granite batholith. Mineralization of the Pungjeong vein, one of the representative vein in the mine was investigated. K-Ar age of sericite in the vein is 84±5 Ma. Hypogene 6pen-space filling can be devided into four paragenetic stages; (1) fine grained quartz and carbonate; (2) quartz and carbonates with base metal sulfides, electrum, native silver, argentite, polybasite, freibergite, pyrargyrite, and Cu-Ag-Fe-S minerals; (3) quartz with base metal sulfides; (4) quartz and calcite with or without pyrite. Composition of electrum ranges from 44.17 to 56.50 atomic % Ag. Meanwhile FeS content of sphalerite coexisting with elctrum in stage II range from 0.01 to 1.67 mol. %. Homogenization temperatures for quartz and sphalerite of stage II (239° to 310℃), quartz of stage III (206° to 255℃) and quartz and calcite of stage IV (232° to 253℃) show little time-space variation during mineralization. Salinities of the fluid inclusions range from 5.5 to 12.8wt% NaCI in stage II, 7.3 to 12.3wt% in stage III and 4.5 to 8.0wt% in stage IV. Based on the homogenization temperatures, Fe content of sphalerite and Ag content of electrum, tempera ture and sulfur fugacity for stage II are estimated to be 208° to 310℃ and 10-9.2-10-12.8 bars, respectively.

목차

Abstract

序言

地質

鑛床

鑛石

各期의 鑛石

金銀鑛物

鑛物共生關係

流體包有物

考察

結言

參考文獻