將軍鑛山의 鉛ㆍ亞鉛ㆍ銀 및 鐵 鑛床의 成因과 地質構造와의 關係

• 영문명: Genesis of the lead-zinc-silver and iron deposits of the Janggun mine, as related to their structural features : Structural control and wall rock alteration of ore-formation
• 발행기관: 대한자원환경지질학회
• 저자명: Hyun Koo Lee(李鉉具) Suck Jin Ko(高錫湊) Imai Naoya(今井直哉)
• 간행물 정보: 『자원환경지질』23권 2호, 161~181쪽, 전체 21쪽
• 주제분류: 자연과학 > 지질학
• 파일형태: PDF
• 발행일자: 1990.04.30

영문 초록

The lead-zinc-silver-iron deposits from the Janggun mine are of hydrothermal-metasomatic origin, characterized by the marked hydrothermal alteration of the wallrocks, such as hydrothermal manganese enrichment of carbonate rocks, silicification, chloritization, sericitization, montmorillonitization and argillic alteration. The ore deposits have been emplaced within the Janggun Limestone of Cambro-Ordovician age at the immediate contacts with apophyses injected from the Chunyang Granite plutons of Late Jurrasic age. They have been structurally controlled by fractures in the carbonate rocks and the irregular intrusive contacts of granitic rocks, and are closely associated with hypogene manganese carbonate deposits. In the mine nine seperate orebodies are being mined. On the basis of the petrological study, hydrothermal alteration zone of this mine may be divided into the following four zones from wallrock to orebody. (Ⅰ) Primary calcite and dolomite zone→(Ⅱ) dolomitic limestone zone→(Ⅲ) dolomitic zone→(Ⅳ) rhodochrosite zone→orebody. There was not recongnized Mn and Fe elements in the primary calcite and dolomite zone. But, in the dolomitic limestone and dolomite zone, calcite and dolomite were subjected to weak hydrothermal manganese enrichment and the grade of the manganese enrichment increase oreward. By means of electron probe microanalysis, it was found that manganoan dolomite occured between primary dolomite grains, cross the cleavage of the primary dolomite and around the dolomite grains. Above these result supports that the Janggun manganese carbonate deposits are of hydrothermal metasomatic origin.

목차

Abstract

序言

地質槪要

地質構造

將軍鑛山의 鉛ㆍ亞鉛ㆍ銀 및 鐵鑛床

鑛化作用과 母岩의 變質

討論 및 結論

참고문헌