铜坑嶂钼矿床的地质特征及找矿预测

矿区出露地层为震旦一寒武系浅变质岩。钼矿床与燕山期高氟、高锂的细粒少斑黑云母花岗岩和花岗斑岩存在密切的空间、时间关系，钼矿化赋存在岩体的内外接触带，包括含辉钼矿萤石石英脉，含辉钼矿的裂隙脉和蚀变岩石（云英岩化）内浸染状产出的钼矿化，含辉钼矿的萤石石英脉是受NEE-SWW向和近SN向裂隙带控制，构成矿床的富矿体，矿区内的富矿作用为钾长石化、黑云母化、云英岩化、萤石化、硅化、绢云母化和绿泥石化，其中，与钼矿化关系密切的蚀变作用是黑云母化、云英岩化、萤石化和硅化。

Geological characteristics of the Tongkengzhang Mo deposit with its prospecting prediction

The exposed strata of this ore area is Sinian-Cambrian epimetamorphic rocks. There is a close spacial and time relationship between the Mo deposit and the Yanshanian biotite granite with granite porphyry which present in fine grains with a few speckles and contain high F , high Li. The Mo mineralization, including the molybdenite-bearing fluorite-quartz vein and molybdenite-bearing cranny vein with the disseminating Mo mineralization in alteration rocks （greisenization）, occurred in the inner and outer contacting zones of the rockbodies. The molybdenite-bearing fluorite-quartz vein is controlled by NEE-SWW trend with near SN trend cranny zones, which has been constituted as a rich ore-bearing orebody. The alteration for ores enrichment in this area includes K-feldspathization, biotitization, greisenization, fluoritization, siliconization, sericitization and chloritization, of which the alteration effects of biotitization, greisenization, fluoritization and siliconization have a close relationship with the Mo mineralization.