四川甘孜嘎拉金矿地质特征及矿床成因研究  

Geologic characteristics and origin of Garze Gala gold deposit, Sichuan Province

作　　者：邹光富[1] 毛英 

机构地区：[1]成都地质矿产研究所 [2]成都岩矿分析测试中心

出　　处：《黄金》2007年第5期9-13,共5页Gold

摘　　要：甘孜嘎拉金矿为位于甘孜—理塘断裂带内的韧性剪切带型金矿床。通过对该矿床的地质特征、矿石矿物学、控矿因素进行系统的研究表明,该矿床受断裂带内的韧性剪切带控制,金矿体主要赋存于韧性剪切带中的糜棱岩带中央部位。容矿岩石主要为上三叠统曲嘎寺组的糜棱岩和糜棱岩化岩石。矿体主要呈脉状、透镜状和浸染状。矿床地球化学研究结果表明,成矿物质主要来源于围岩和地壳深部,矿床为中低温热液剪切带型金矿床。Garze Gala ductile shear zone gold deposit locates in Garze-Litang fracture zone in Garze County, west Sichuan province. A research on geologic characteristics, ore mineralogy, ore-controlling factor, fluid inclusion and stable isotope geochemistry indicates that the gold mineralization and deposit locates in mylonite of the ductile shear zone. The mineralization is held by mylonite and mylonitic rocks, and orebodies are mainly in veinlike, lenticular and disseminated forms. The deposit occurs in mylonite and mylonitic rocks of upper Triassic Quegasi Formation. Geochemical studies show that gold and other metal elements mainly came from wall rock and deep crust, and the deposit is a medium or low temperature hydrothermal deposit.

关 键 词：甘孜-理塘断裂带 韧性剪切带型金矿 矿床地质特征 矿床成因 嘎拉金矿床 

分 类 号：P618.51[天文地球—矿床学]