兰坪金顶铅锌矿石膏的研究

兰坪铅锌矿床是目前我国最大的Pb-Zn矿床,一般认为其成因为热液成矿作用.兰坪盆地自中生代以来,形成了极为丰富的金属与盐类矿产,是我国著名的热液成矿带,同时还拥有大型的石膏矿床.以成矿过程中石膏的流体性质为主要研究内容,选择兰坪金顶铅锌矿区的架崖山—北厂矿段为主要样品采集区.以热液矿物作为研究对象,研究了石膏的结构和构造.通过矿物学-岩相学研究,观察石膏在不同矿化阶段的这些特征,观察石膏在热液成矿期次中的这些特征;结合电子探针微区分析,基本查明石膏在各阶段流体的化学组成.

The Gypsum in Pb-Zn Deposit of Jinding Lanping

Lanping Pb-Zn deposit has been known at home and abroad as the largest Pb-Zn deposit in our country.Lanping Jinding Pb- Zn deposit is generally considered as forming hydrothermal mineralization. Lanping basinwhich formed abundant metal and salt mineral resources since Mesozoic is a famous belt of hydrothermal mineralizationas the largest gypsum deposit in China. In this article,the main content of study is the fluid properties of gypsummineralization process. We collected samples in Jiayashan- north factory which is in Lanping Jinding Pb- Zndeposit. Taking the hydrothermal minerals as study objective,we studied the structure and construction of gypsum.According to Mineralogy and petrography study to observe these features of gypsum in hydrothermal mineralizationperiod and combining the micro-analysis of the electron probe,the chemical composition of gypsum in each fluidphase was basically ascertained.