地质科技情报2009，Vol.28Issue(4)：59-64,6.
川西龙门山地区元古代VMS铜矿床:硫化物微量元素和硫同位素证据
The Proterozoic VMS Copper Deposit in Longmen Mountain Area of Chuanxi:Evidence from Sulphide Trace Element and Sulfur Isotope
摘要
Abstract
A series of blocklike pyritic copper deposits are developed in the epimetamorphic athrogenic rock in Longmen Mountain of Chuanxi area(western Sichuan),where ore-bearing rocks are formed in island arc tectonic environment. The pyrite amounts to nearly 90% of whole metallic minerals, with the content of chalcopyrite varing from 0.8% to 3% and sphalerite from 1%-4%. The main elements of mineral are Fe, S,Z, Cu, and Mn, and sub-elements are Ag, Au, Pb, Se, Cd, Ga, Ti, V, Co, etc. The ratio of δ(34S) spreading each layer ranges from -1.5‰ to +15.9‰ with the average occupation +7.6‰ and the ratio of 32S/34S 22. It can be concluded from the finding above that the elements are mainly sourced the deep earth's crust, about the subduction area of the oceanic crust.The main metallic sulphide and its trace elements and sulfur isotope formation character show that the mineral belongs to massive sulfide deposit formed by volcano--the VSM.关键词
VMS铜矿床/硫同位素/微量元素Key words
VSM copper deposit/sulfur isotope/trace element分类
地质学引用本文复制引用
杨钻云,邱仁轩,秦术凯,仲世新,张羽洋..川西龙门山地区元古代VMS铜矿床:硫化物微量元素和硫同位素证据[J].地质科技情报,2009,28(4):59-64,6.基金项目
四川冶金地质勘查局项目"彭州式铜矿床资源潜力评价"(20070747) （20070747）
