摘要
从不同标高、不同矿化带的流体包裹体研究入手,系统地论述了七宝山铜多金属矿床成矿流体的性质、演化过程及其与成矿的关系。黄铁矿爆裂测温表明:成矿流体温度变化在平面上以岩体为中心向四周依次为291℃～287℃～279℃,在剖面上由下往上依次为312℃～286℃～228℃。成矿流体成分主要为H2O,其次为CO2,H+,浓度由早期到后期呈递减趋势,表明成矿热液为酸性—弱碱性的演化过程。
Based on measures of fluid inclusions in different levels and mineralized belts, the characteristics and evolution process of ore-forming fluids in the Qibaoshan Cu-polymetallic deposit are discussed systematically. Decrepitating thermometry of pyrite shows temperature of the ore-forming fluids dropped slowly from 291℃ to 279℃ around the rock body in horizontal, and varied from 312℃ to 228℃ from the lower level to upward in profile. The main composition of the fluids was H2O and CO2, the concentrations of H+ decrease progressively during evolution of the ore-forming fluids, showing tendency of the fluids from acidity to alkalescence.
出处
《地质与勘探》
CAS
CSCD
北大核心
2003年第5期22-25,共4页
Geology and Exploration
基金
国家自然科学基金项目(编号:49772152)资助。
关键词
铜多金属矿床
成矿流体
包襄体
盐度
矿化度
ore-forming fluid, fluid inclusion, salinity, degree of mineralization, Qibaoshan
