摘要
系统研究茅坪矿床各类型矿体矿物中包裹体显微镜下特征和均一温度、冷冻盐度、气液相成分、δD、δ^(18)O等特征及其差异,并对有关数据进行了热力学计算.结果表明锡钨矿化分别主要富集于高中温和中低温条件,矿化压力为500～550bar,pH为3.97—4.91、Eh为-208～-439mv,fo:为10^(-30)～10^(-50)bar,成矿流体来源于岩浆水和地层水.
The study of the characters of fluid inclusions, such as microscopic characteristic, homogenization temperature, cooling salinity, gas-liquid phase composition, δ18O, δD, as well as their differences in minerals of various ores in Maoping deposit has been conducted systematically and the relevant thermodynamical calculation has also been made. The result shows that major cassiterite and wolframite mineralization were formed under high-intermediate temperature and intermediate-low temperature respectively, the ore-forming pressure ranges from500 to 550 bar, pH 3.97-4.91, Eh -208-439mv, fo210-30- 10 -50 bars, the ore-forming fluid was derived from magmatic and stratic water.
出处
《矿产与地质》
1991年第4期311-317,共7页
Mineral Resources and Geology
关键词
钨
锡
多金属矿
矿床
矿物包体
Fluid inclusions, Sn-W deposit, Jiangxi
