摘要
金鸡山金矿是安徽池州地区近年新发现的一个独立金矿床,成因上属于富硫化物石英脉型。采自主成矿阶段石英中的原生流体包裹体显微测温和激光拉曼光谱分析表明,主成矿阶段的温度峰值为280～320℃,成矿流体盐度为2.81%～10.11%NaCl,密度为0.61～0.96g/cm3,是一种中温、低盐度、低密度的NaClH2OCO2体系,具有中温热液金矿床的成矿流体特征。矿床形成于中浅成环境(成矿深度0.96～3.17km);成矿流体的不混溶及流体中CO2和CH4等有机质对矿质的活化、运移及沉淀均起到了重要作用。
Jinjishan deposit is a gold-only deposit recently discovered in the Chizhou area, Anhui Province. It belongs to the sulphide-rich quartz vein type. Study on fluid inclusions in quartz of the major metallogenetic stage indicates that the temperature of the ore-forming fluid is between 280℃ and 320℃, and its salinity between 2.81%NaCl and 10.11%NaCl, density between 0.61 g/cm^3 and (0.96 g/cm^3.) The ore-forming fluid belongs to the NaClH_2OCO_2 type with moderate temperature, low salinity and low density. It is similar to that of the mesothermal gold deposit. The deposit formed in shallow-moderate depth (0.96～3.17 km). Fluid immiscibility, CO_2 and some organic matters like CH_4 play important role in mobilization, transporting and precipitation of ore-forming materials.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2004年第4期522-526,共5页
Journal of Jilin University：Earth Science Edition
基金
吉林大学青年教师基金资助项目(2002)
关键词
成矿流体
流体不混溶
激光拉曼光谱
金鸡山金矿床
ore-forming fluid
fluid immiscibility
laser Raman spectrometer
Jinjishan gold deposit
