东昆仑南缘哥日卓托金铜矿成矿特征及找矿标志

Metallogenic Geological Characteristics and Prospecting Criterias for Gerizhuotuo Gold-copper Deposit in Southern Margin of East Kunlunu Orogen

哥日卓托金铜矿位于布喀达坂峰-阿尼玛卿山华力西期钴(金、锑)成矿带上,成矿地质条件优越。但受自然条件的制约,哥日卓托金矿床发现较晚,且工作程度较低,找矿方向不明确。通过对成矿地质背景、矿床地质特征等资料综合研究,认为矿区主要发育与华力西期花岗闪长岩密切相关的矽卡岩型铜矿,以及与东西向构造作用密切相关的蚀变岩型金矿。为此,笔者依托近年来承担该矿床的矿床勘查工作取得的资料,通过矿床地质特征和成矿作用的总结,对矿区找矿前景和找矿方向进行探讨,以期对矿区矿产勘查工作有所裨益。

Gerizhuotuo gold-copper deposit is located at Variscan cobalt （gold, Antimony） meta- logenic belt of Buka Daba Mountain-Anyemaqen Mountains and has superior ore-forming geolog- ical conditions. But restricted by the natural condition, the Gerizhuotuo gold deposit has been found very late, its geological work degree is low and the prospecting direction is not clear. Based on the comprehensive analysis of the metallogenic geological background and the geological char- acteristics of this deposit, it＇s considered that skarn type copper deposit and alterd rock type gold deposit were mainly developed in this mining area, the former is closely related to the variscan di- orite while the later has close relationship with EW-trending tectonic process. Relying on the data obtained from the deposit exploration work in recent years, the metallogenic geological character- istics and mineralization have been sunnarized, the prospecting direction and potential have been discussed in this paper for benefiting the exploring work in this deposit.