新疆红山糜棱岩型金矿床地质特征及成矿条件  

Geological features and metallogenetic condition of the Hongshan mylonite-type gold deposit, Xinjiang

作　　者：赵海滨[1] 周新春[1] 李广文[1] 张选文[1] 李红霞[2] 李成玉[1] 

机构地区：[1]武警黄金第八支队,新疆乌鲁木齐830057 [2]武警黄金地质研究所,河北廊坊065000

出　　处：《黄金地质》2004年第2期33-38,共6页Gold Geology

摘　　要：红山金矿区属天山地槽北天山地向斜褶皱带,位于康古尔与苦水断裂之间狭长的含金韧性剪切带东段北缘;出露地层为中下石炭统;华力西中晚期的多期次岩浆活动、韧性剪切作用和构造活动叠加形成了一系列金及多金属矿床,已成为新疆东部主要的产金基地。通过对红山金矿床地质特征的研究,并从宏观及微观尺度进行成矿条件分析发现金的富集与多金属硫化物,尤其是与方铅矿关系密切。主要特征是贫黄铁矿,少多金属硫化物,局部富含方铅矿,金的分布极不均匀。金具多源性,主要来自岩浆,少量来自围岩。剪切作用多次叠加及强烈糜棱岩化,使金矿物与多金属硫化物沿裂隙及糜棱面理分布,形成糜棱岩型或超糜棱岩型金矿床。The Hongshan gold field belongs to the syncline fold belt of northern Tianshan in Tianshan geosyncline, and locates in the north edge of east section of the long and narrow auriferous ductile shear zone between Kangguer and Kushui fault. The strata are mainly Middle-Lower Carboniferous. A series of gold and polymetallic ore deposits caused by the mutimagmatic activity, muti-ductile shearing action and muti-tectonic activity superposition of Middle-Later Variscan Period, and formed a major auriferous base in eastern Xinjiang. The study on the geological features and the metallogenetic condition from macroscopical and microcosmic scale of the Hongshan gold deposit show that the enrichment of gold was related with the polymetallic sulfides closely, especially with galena. The main features are poor pyrite, few polymetallic sulfides, enrich galena in part and inhomogeneous distribution of Au. Au was polytopism, mainly from magma, a few from wall rock. The muti-shear and strong mylomitization caused gold mineral and polymetallic sulfides distributed along the fissures and mylonitic texture and formed mylonite type or super-mylonite type gold deposit.

关 键 词：糜棱岩型金矿 地质特征 成矿条件 韧性剪切带 新疆 

分 类 号：P618.51[天文地球—矿床学]