闪长岩类侵入体中改造型金矿床形成分析  

CHARACTERISTICS AND GENESIS OF DIORITE-HOSTED GOLD DEPOSITS

作　　者：梁华英[1] 莫测辉[1] 王秀璋[1] 程景平[1] 

机构地区：[1]中国科学院广州地球化学研究所,广州510640

出　　处：《地质与勘探》2000年第1期17-19,共3页Geology and Exploration

基　　金：国家自然科学基金!(编号 :493 72 10 5 )

摘　　要：赋金闪长岩类侵入体主要发育于褶皱带中,形成时代在晋宁期至印支期,金矿主要以石英硫化物型产于岩体破碎带中,成矿时期在印支期到喜山期之间,成岩成矿之间存在巨大时差,成矿物质主要来自岩体及含金沉积岩系,成矿流体以大气降水及建造水为主。闪长岩类侵入体中的金矿床主要是改造作用形成的。The gold-hosting diorite was formed in Jinning period to Indosinian and occurs in fold system. The gold mineralization occurs mainly as quartz-sulphide veins; the ore deposits were formed in Indosinian to Yanshanian. There is a great time gap between the age of gold deposits and that of gold-hosting intrusions. Based on the geochemistry of Pb, H and O isotopes, it is considered that the ore-forming materials derived from intrusions and fluid from meteoritic water and formational water. Those types of gold deposits were formed by reworking process.

关 键 词：金矿床 改造成矿 侵入岩 闪长岩类 侵入体 

分 类 号：P618.510.5[天文地球—矿床学] P588.12[天文地球—地质学]