西昆仑库地铬铁矿地球化学特征及找矿模式

Geochemical Characteristics and Ore Prospecting Model Of Kudi Chromate Deposit in Westen KunLun

库地蛇绿岩中纯橄岩相为铬铁矿主要含矿岩相,基性-超基性岩与区内Cr,Ni,Co元素组合异常对应好,铬铁矿化纯橄岩和铬铁矿体出露部位Cr,Ni,Co元素值较高。F,B元素与Cr,Ni,Co元素异常值在铬铁矿体中呈明显正相关关系,因此认为Cr,Ni,Co元素组合异常为铬铁矿化直接指示标志,F,B元素异常为铬铁矿找矿间接标志。对库地铬铁矿地球化学特征和地球化学找矿模式进行总结,以期为该区通过地球化学方法寻找同类型矿床提供参考依据。

The chromite mainly exists in dunite In the Kudi ophiolite,the mafic ultramafic rocks and the area of Cr,Ni,Co element composite anomalies are corresponding to each other,the chromite dunites and chromite ore bodies exposed parts of Cr,Ni,Co anomaly value is higher.The abnormal value of F,B and Cr,Ni,Co elements in chromite deposit in obvious positive correlation,it is concluded that Cr,Ni,Co element assemblage anomaly is chromitization direct indication,F,B element anomaly is the indirect signs to find chromite.This paper summarizes the geochemical characteristics and geochemical prospecting model of Kudi chromate deposit,Reference is provided to find the same type of ore deposits in this area by geochemical methods.