蚀变带元素地球化学成矿预测法──以金龙山微细浸染型金矿为例  

THE METHOD OF GEOCHEMICAL METALLOGENIC PROGNOSIS IN MINERALIZATION ALTERATION ZONE-TAKING JINLONGSHAN MICRO-FINE DISSEMINATED GOLD DEPOSIT

作　　者：赵利青[1] 

机构地区：[1]北京大学地质学系,北京100871

出　　处：《地质找矿论丛》1997年第3期41-48,共8页Contributions to Geology and Mineral Resources Research

基　　金：武警黄金指挥部资助!HJ9313

摘　　要：金矿化作用伴随围岩蚀变，且多受断裂控制，反映在地球化学上出现某些元素的异常。在已发现一定矿（化）作并掌握一般控矿特征的地区，利用已有工程在蚀变带内连续拉块采样，分析有关指示元素，总结有关的地球化学指标，建立地球化学预测模式，对已知矿（化）体及外围异常进行地球化学评价。该方法在秦岭南坡金龙山微细浸染型金矿上的应用有较好的效果。Gold mineralization usually accmpanies with wall-rock alteration and is mostly controlled byfaults or fractures. It reflects some elements' anomalies in geochemistry. In a area where certaingold mineralzation bodies or gold ore bodies has been found and the general ore-controling fea-tures of have been recognized, geochemists can collect composite samples scientifically, mainlymineralization alteraton zone, analyse indicator elements, summarize geochemical indexes, set upthe model of geochemical metallogenic 'prognosis based on the nature of elements' anomalies orlinear productivity, the gcochemical indexes or elements' ratios, the estimated values of gradualregression equations, and forecast the deep of known mineralization bodies or ore bodies, and e-valuate the prospects of peripheral anomalies. The method is successful at Jinlongshan gold de-posit which is a sediment-hosted micro-find disseminated type gold deposit in Qingling Mountain.

关 键 词：元素地球化学 成矿预测 金矿床 浸染型矿床 

分 类 号：P618.510.8[天文地球—矿床学] P618.510.4[天文地球—地质学]