【作者】 芮宗瑶； 李荫清； 张洪涛；

【Author】 Rui Zongyao Li Yinqing Chang Hongtao (Institute of Mineral Deposits)

【机构】 矿床地质研究所；

【摘要】 <正>在普查评价斑岩型铜,钼,锡,钨等矿床时,鉴别含矿斑岩与非含矿斑岩是急待解决的重要问题之一。因为在一个矿带中,斑岩体往往数以十计或百计,而含矿斑岩仅屈指可数。笔者利用显微加热台、冷冻台和偏光显微镜,较详细地研究了藏东玉龙斑岩铜(钼) 矿带的20个含矿斑岩和非含矿斑岩的流体包裹体,发现它在类型、子矿物、气液比、温度、更多还原

【Abstract】 Based on the study of the fluid inclusions of 20 orebearing porphyry and barren porphyry bodies along the Yu Long porphyry copper(molybde- num)deposit belt,the authors are under the impression that these two types of porphyry bodies can be discriminated by means of the following different characters of their fluid inclusions. Ore-bearing porphyry Barren porphyry 1.Type Gaseous inclusion,poly-phase inclusion and liquid inclusion. 2.Temperatures of homogeniz- ation Mainly liquid inclusion and scarcely poly-phase inclusion. 600-180℃. 3.Pressvres of the moment of homogenization 240-1800 atm 4.Salinity ＜10-18m NaCl+KCl 5.Daughter minerals halite,sylvite,hematite, anhydrite and pyrite(?). 6.Ratio of gas to liquid 5-95% 7.Revival boiling repeated. 8.Evolution of thermal fluid late-magma stage-pneumatoly- tic stage-high-low hydrother- real stage(magmatic water and meteoric groundwater. 350-100℃. 240-747 arm. 10m NaCl. halite only. 5-35% no. intermediate-low hydro- thermal stage only (consisting mainly of meteoric groundwater).更多还原