摘要
为探讨西沟矿床的成矿物质来源、矿床成因和成矿金属元素赋存状态,本文利用电子探针分析技术,研究了该矿床中银的赋存状态,并探讨了银的成矿机理。结果表明,西沟矿床中银以独立矿物或类质同象产出,主要独立银矿物有自然银、辉银矿和硫铜银矿,主要类质同象矿物为银黝铜矿和含银黝铜矿。辉银矿以显微包体形式赋存于方铅矿中;硫铜银矿呈不等粒集合体分布于黄铜矿颗粒的边部;而自然银呈粒状分布于石英脉及碳酸盐矿物的晶隙间。
The silver occurrence in Xigou lead-zinc-silver deposit were studied by a mean of electron probe microanalysis（EPMA）,and the silver mineralization mechanism was discussed in this paper. The results show that Ag in the ore occurs mainly in more than three kind of Ag minerals including native silver,argentite and stromeyerite; and in lattice of freibergite,silver-bearing tetrahedrite in isomorphism. Argentite occurs in the form of microscopic inclusions in galena;Stromeyerite is in heterogranular aggregates distributing in chalcopyrite granular edge; native silver embedded in quartz vein and carbonate mineral into grained.
出处
《矿物岩石地球化学通报》
CAS
CSCD
北大核心
2015年第1期184-190,共7页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
中国地质调查局项目(G1101004)
