城门山铜矿矿石矿物组成及矿物学特征

Ore Mineral Component and Mineralogy of the Chengmenshan Cu Deposit

城门山铜矿位于江西九江,处于环太平洋金属成矿带之下扬子铜铁多金属成矿带中,受长江断裂带与北西及北东断裂带的控制,属深源浅成铜铁矿床成矿系列。该矿矿石矿物以金属硫化物为主,主要为黄铜矿、黄铁矿、辉钼矿、闪锌矿、磁铁矿等,矿石结构主要为自形结构、自形-半自形结构、他形结构、交代残余结构、脉状结构等。城门山铜矿主要受深源浅成中酸性斑岩体的控制,铜矿广泛分布于接触带外,区内铜矿与硅化时空关系最为密切,为广义矽卡岩型铜矿。

The Chengmenshan copper deposit lies in the Yangtze Cu-Fe-Polymetallic ore belt of the circum-Pacific metallogenic belt and controlled by Yangtze fault zone and the NW- and NE-trending fault zones. This paper has a discussion on ore mineral association, wallrock alteration, mineral succession of generation and minor element components as well as mineralogy of ore mineral of the Chengmenshan Cu deposit. Ore minerals are chalcopyrite, pyrite, molybdenite, sphalerite, magnetite and so on. Ore textures are euhedral texture, xenomorphic texture, metasomatic relict texture and so on. The deposit is controlled by the Chengmenshan granite porphyry intrusion and occurs in endocontact and exocontact, be a generalized skarn deposit.