江西冷水坑斑岩银矿床的蚀变碳酸盐矿物与银矿化关系  

RELATIONSHIP BETWEEN ALTERATED CARBONATE MINERALS AND SILVER MINERALIZATION IN THE LENGSHUIKENG PORPHYRY SILVER DEPOSIT,JIANGXI

作　　者：魏明秀[1] 

机构地区：[1]中国有色金属工业总公司矿产地质研究院

出　　处：《矿产与地质》1997年第1期39-45,共7页Mineral Resources and Geology

基　　金：中国有色金属工业总公司项目

摘　　要：冷水坑斑岩银矿由斑岩岩体中心向围岩，以铁绿泥石化和菱铁矿化为主的铁质交代作用广泛发育。蚀变碳酸盐亚种为以菱铁矿为主的ＦｅＣＯ３－ＭｎＣＯ３系列，菱铁矿中含Ｍｎ高对银矿化有利。含锰菱铁矿化在外带与浅部有增高的趋势。Ferruginous metasomatism characterized by ferri chloritization and sideritization is commonly developed from the center of the porphyry rocks to the country rocks in the Lengshuikeng porphyry silver deposit. The subspecies of altered carbonate is the FeCO 3-MnCO 3 series dominant in siderite constituent. High content of manganese in siderite is favourable to the silver mineralization.The manganese bearing sideritization in the out belt and shallow part is trending to increase,and closely related to the silver,lead and zinc mineralization.

关 键 词：银矿床 斑岩型矿床 蚀变碳酸盐矿物 银 矿化 

分 类 号：P618.520.4[天文地球—矿床学] P618.520.5[天文地球—地质学]