云南会泽铅锌矿床脉石矿物方解石REE地球化学  

REE GEOCHEMISTRY OF CALCITE -A GANGUE MINERAL IN THE HUIZE ORE DEPOSIT, YUNNAN

作　　者：黄智龙[1] 陈进[2] 韩润生[1] 李文博[1] 高德荣[2] 赵德顺[2] 刘丛强[1] 

机构地区：[1]中国科学院地球化学研究所矿床地球化学开放研究实验室,贵州贵阳550002 [2]云南会泽铅锌矿,云南会泽654211

出　　处：《矿物学报》2001年第4期659-666,共8页Acta Mineralogica Sinica

基　　金：国家自然科学基金项目 (批准号 :40 172 0 38) ;云南省省院省校科技合作项目 ( 2 0 0 0YK 0 4)

摘　　要：方解石是云南会泽铅锌矿床最重要的脉石矿物 ,原生矿石中三种产状 (即团块状状、团斑状和脉状 )方解石的REE含量、有关参数和配分模式都有一定的差异 ,但不同产状方解石之间以及同种产状方解石的REE地球化学特征具有连续变化规律。分析结果表明 :矿区原生矿石中三种产状方解石为同源不同阶段形成的产物 ;矿床成矿流体具有多来源特征 ,地幔流体活动在成矿流体形成过程具有重要作用 ;成矿流体在演化过程REE含量逐渐降低 ;成矿环境由相对还原向相对氧化变化。Calcite is the dominant gangue mineral in the Huize Pb Zn deposit of Yunnan Province. And there are three forms of occurrence of calcite in the primary ores (massive, massive porphyrytic and vein like). Differences are recognized in REE content, relevant parameters and distribution pattern for calcite, but different forms of calcite and the same form of calcite show continuous variation regularities in REE geochemical characteristics. Analytical results have shown that the three forms of calcite in the primary ores are the product of the same source but different stages; ore fluid is of multi source and mantle fluid activities played an important role in the formation of ore fluid; the REE contents tend to decrease in the process of evolution of ore fluid; and the ore forming environment tends to have become from relatively reducing to relatively oxidizing.

关 键 词：云南 铅锌矿床 脉石矿物 方解石 REE地球化学 成矿流体 稀土元素 

分 类 号：P618.42[天文地球—矿床学] P595[天文地球—地质学]