摘要
通过矿物包裹体研究,银山铜多金属矿床成矿温度为130～380℃,压力约100bar,盐度为5.9～9.3Wt％NaCl,fO_2为10^((-31)～(-13.5)),fCO_2为10^((2.7)～(0.8))。成矿流体以其中(低)温、中低盐度、沸腾不明显等特点区别于斑岩铜矿。从而认为银山矿床属于次火山中温热液型矿床。
Based on the study of fluid inclusion in minerals, Yinshan Copper-polymetallic deposit is characterized by its ore-forming conditions: temperatures ranging from 130 to 380℃ , the pressnce being about 100 bar, salinities being from 5.9 to 9.3 wt% NaCl, fo210-31 to 10-13.5, and fco2100.8 to 102.7. The features of ore forming fluids is mesothermal, medium to low salinities with indistinct boiling feature, which can be distinguished from that of porphyry deposits, Therefore it is considered that Yinshan deposit is a subvolcanic mesothermal ore deposit.
出处
《矿产与地质》
1990年第3期50-58,共9页
Mineral Resources and Geology
