摘要
本文研究铁炉坪银铅矿床方铅矿的化学成分、同位素组成和方铅矿热电性等矿物学特征,提取了有一定参考价值的成因信息和找矿标志。认为铁炉坪银铅矿床系产于太古宇绿岩带背景上与岩浆活动有关的岩浆热液—变质热液矿床,其矿质主要来源于太古宇太华群结晶基底,指出方铅矿以含少量Sb,几乎不含Bi,含极少量Ag和富含Cu的标型特征,提出在矿区800—850m标高以下银铅矿体赋存的可能性很小。
This paper Studies the feature of mineralogy for galena in Tieluping Ag - Pb deposit, in-cluding chemical comporsition isotopic constitution and thermalelectricity of galena etc. . and extracts some genetic information and ore guide with consulting value. The author considers that Tieluping Ag -Pb deposit which occurecl in Archean greenstone belt belongs to magmat-ic thermal - metamophil thermal type of deposit and had something to do with magma activi-ty. The ore - forming material mainly came from crystalline basement of Archean Taihua Group. Galena with small content of Sh、 nearly barren of Bi, a very few of Ag and abundant of Cu shows its typomorphic characteristics. The author proposes that in mining area the pos-sibility for Ag - Pb ore body occuring under the 800-850 meters cevel is very few.
关键词
铅矿床
方铅矿
地质意义
银矿床
Ag -Pb deposit galena typomorphic feature Tieluping of Henan
