摘要
木里梭罗沟金矿主要载金矿物为黄铁矿和毒砂,黄铁矿主要呈它形和五角十二面体产出,一些黄铁矿具含砷黄铁矿"边"。黄铁矿晶形不同,含金量也不同。电子探针和激光离子探针分析结果统计显示,黄铁矿亏硫或接近理论值,属变质热液成因;黄铁矿中的Co含量低、ω(Co)/ω(Ni)<1、ω(Au)/ω(Ag)>0.5,它形成于中温环境;黄铁矿ω(Fe)/ω(S+As)均值为0.845,形成环境为中深部。矿床成因属基性火山岩构造蚀变岩型,成矿流体主要来自变质热液。
The main gold-bearing minerals of Suo-luogou gold deposit in muli country is pyrite and arsenopyrite.The pyrite is typomorphic in allotriomorphic and pyritohedron,which were circled by arsenopyrite edge.The gold grade is higher in pyrite to its typomorphic.The sulfur value analyzed by electron probe microanalysis and laser ion microprobe in pyrite is lower or equal to its theoretical value,which indicated the metamorphous hydrothermal genesis.The pyrite is characteristic of lower Co,ω(Co)/ω(Ni)<1、ω(Au)/ω(Ag)<0.5,formed in Temperature environment,and the mean ω(Fe)/ω(S + As)in pyrite indicated the deposit formed in the depths of middle-deep.The suo-luogou gold deposit belongs to structure-metamorphosis-type of volcanic.
出处
《物探化探计算技术》
CAS
CSCD
2012年第6期729-734,624,共6页
Computing Techniques For Geophysical and Geochemical Exploration
关键词
梭罗沟
金矿
黄铁矿
标型特征
成因
Suo-luogou
gold deposit
pyrite
typomorphic characteristics
genesis
