摘要
陕西略阳东沟坝黄铁矿型金银多金属矿床产于中上元古界碧口群海相火山岩地层中,属火山-沉积受变质矿床。经包体测温、矿物学、矿石组构学等的研究及热力学计算,该矿床在区域变质矿化期的温度为200—400℃,压力为500MPa,硫逸度为10^(-9.49),二氧化碳逸度为10^(-3.189),氧逸度为10^(-30.8)。
The gold, silver, base-metal ore deposits of pyrite-type in Donggouba, Lueyong, Shanxi occur in marine volcanic rocks in Bikou group, middle-late Proterozoic. The genetic type of the ore deposit belongs to volcanic sedimentary-metamorphosed ore deposit. By calculation of thermodynamics and the study on mineralogy, ore fabrics, fluid inclusions and stable isotopes, the formation temperatures inthe epoch of regional metamorphism range from 200—400℃; the pressure is 400—500MPa, fs_2=10^(-9.49)±, fo_2=10^(-30.8)±, fco_2=10^(-3.19)±.
出处
《矿物岩石》
CAS
CSCD
1991年第2期55-64,共10页
Mineralogy and Petrology
关键词
金
银
多金属
矿床
成矿
physical and chemical condition of ore formation, the epoch of ore formation of regional metamorphism, the temperature of ore formation, the pressure of ore formation, sulphur fugacity, carbondioxide fugacity, oxygen fugacity
