羊石坑汞矿床包裹体地球化学特征研究  

THE GEOCHEMICAL CHARACTERISTCS OF FLUID INCLUSIONS FROM THE YANGSHIKENG MERCURY DEPOSIT,SICHUAN,CHINA

作　　者：夏勇[1] 

机构地区：[1]中国科学院地球化学研究所,贵阳550002

出　　处：《矿产与地质》1992年第4期313-317,共5页Mineral Resources and Geology

摘　　要：羊石坑汞矿是80年代后期勘探的大型汞矿床,矿床位于川黔汞矿带北部,矿体以细脉、网脉浸染状为主。包裹体地球化学研究表明,成矿温度120～250℃,成矿流体盐度为10.6％(NaCl),流体沸腾发生在250℃左右,包裹体圈闭的最小压力为40×10~5Pa,成矿深度约为400m。结合成矿构造环境、构造演化、探讨了构造改造成矿机制和规律。Yangshikeng mercury deposits occurring in the northern portion of Guizhou - Sichuan mercury ore province were explored in late 1980'.These large scale mercury ore deposits bear veinlet,stockwork and diss-minated mineralization. Fluid inclusion studies have been shown that the homogenization temperatures of the fluid inclusion range from 60℃ to 300℃with boiling temperature being about 250℃ .the salinities range from 4. 1 to 19. 6 wt. % Nad equv. and the minimum pressure of the ore formation was about 40×105Pa,equivalent to ore-forming depth about 400 meters . The evidence obtained from fluid inclusions and the geological setting indicates that the mechanism of mineralisation is related to structural reactivation .

关 键 词：汞矿床 矿物包体 地球化学 

分 类 号：P618.680.4[天文地球—矿床学]