赣南谢坊萤石矿CaF_2与围岩钙氟特征及成矿意义  

Characteristics and ore-forming significance of CaF_2 of fluorite ore and calcium,fluoride of wall rock in Xiefang,Gannan

作　　者：杨明生[1] 杨永锋[2] 赖劲虎[1] 

机构地区：[1]南昌大学资源环境与化学工程学院,江西南昌330047 [2]华南农业大学理学院,广东广州510642

出　　处：《矿业工程研究》2014年第4期58-62,共5页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(41001123);江西省教育厅科技资助项目(GJJ13075);江西省重大科研专项计划资助项目(20124ABE02104)

摘　　要：对赣南谢坊萤石矿床萤石Ca F2和围岩的钙、氟元素进行了系统检测,分析发现矿井萤石含量与围岩的钙、氟含量具有良好的相关性,表明谢坊萤石的钙氟成矿物源来自矿床围岩.谢坊萤石矿的形成是通过地热水环流汲取围岩Ca,F元素,在合适的断裂空间沉淀析出萤石,形成典型的热液成矿萤石.谢坊萤石矿床围岩的w(Ca)/w(F)大于萤石,显示热液成矿过程中存在Ca的剩余,F元素对成矿起决定作用.The CaF2 of fluorite ore, Ca and F of wall rock in Xiefang fluorite deposit have been determined systematically, and this paper analyzes the relationship between CaF2, Ca and F, which shows a good correlation, indicating that the sources of Ca and F are the wall rock of the deposit. The geothermal fluid melts the wall rock, then much Ca and F gets into the geothermal fluid, and finally, the fluorite ore is formed in the rock fracture, whieh is typical of hydrothermal mineralization. The value of Ca/F of the rock is bigger than that of the fluorite ore, which reveals that the Ca is superabundant during the hydrothermal mineralization, and F plays a decisive role in ore -forming.

关 键 词：钙氟含量 萤石 围岩 赣南谢坊 

分 类 号：TD871.5[矿业工程—非金属矿开采]