吉林金厂沟金矿成矿地质特征及成因

GEOLOGY AND ORIGIN OF THE JINCHANGGOU GOLD DEPOSIT

金厂沟金矿为一典型的隐爆角砾岩筒型金矿 ,产于华北地台北缘柳河地堑中。矿床在空间上和成因上与隐爆角砾岩筒关系密切。矿体受环状断裂和放射状断裂控制 ,以蚀变岩型矿化为主。包裹体以气液相包裹体为主 ,成矿温度为 2 0 6～ 398℃ ,盐度为 5 .7～ 11.5wt%NaCl。该矿床为次火山作用期后热液交代形成的蚀变岩型金矿。

The Jinchanggou gold deposit is a typical gold deposit. It is located in the Liuhe graben at the northern margin of the North China Platform. It is spatially and originally related to the breccia pipes. The orebodies are controlled by circular and radiant fractures, and are confined to the altered fracture zones. The geochemistry of the ore deposit is characterized by the dominance of liquid fluid inclusions, with temperatures of 206～398℃ and salinities of (5.7～11.5)wt.%NaCl.\;