統營鑛山産 閃亞鉛石의 化學組成

• 영문명: Chemical Composition of Sphalerite Relating to Mineralization at the Tongyoung mine, Korea
• 발행기관: 대한자원환경지질학회
• 저자명: Moon Young Kim(金炆 榮) Hong Ja Shin(申虹子)
• 간행물 정보: 『자원환경지질』22권 2호, 103~119쪽, 전체 17쪽
• 주제분류: 자연과학 > 지질학
• 파일형태: PDF
• 발행일자: 1989.04.30

영문 초록

The Tongyoung deposits are epithermal gold and silver bearing quartz-rhodochrosite vein type deposits of late Cretaceous. They occurs in the andesite and tuff breccia member called Gyeongsang basin. Four mineralizations can be distinguished at the mine based on macrostructures. From earlist stage to lastest stage they are: stage I, base-metal quartz vein; stage II, rhodochrosite vein (IIA) and Pb-Zn vein (IIB); stage III, barren quartz vein; stage IV, calcite-ankeritic rhodochrosite veins. Gold and silver mineralizations occur predominantly in the stage I and IIB. Electrum is closely associated with galena, sphalerite and pyrite, and has chemical compositions of 50.98-64.05 atom % Ag. Sphalerite contains 2.09-5.05 mol % FeS and 0.34-2.01 mol % MnS in the stage I, and 2.01-3.41 mol % FeS and 0.21-2.80 mol % MnS in the stage IIB. The FeS and MnS contents are in general correlated, and shows a characteristic zonal arrangement of electrum. It reveals rhat FeS contents of sphalerite which precipitated before electrum, gradually decreases in a grain during its deposition ranging from about 3.3 to 2 mol %. It may be considered from the above data that an increase of fs₂ caused by the oxidation of ore forming fluid is more important that the decrease of temperature.

목차

Abstract

序言

地質 및 鑛床槪要

鑛化時期 및 鑛物組成

閃亞鉛石의 化學組成

考察 및 結論

參考文獻