金窝子金矿金的赋存状态和金矿物特征  

CHARACTERISTICS OF GOLD MINERALIZATION OF THE JINWOZI GOLD DEPOSITS,XINJIANG

作　　者：舒斌[1] 陈柏林[2] 吴淦国[3] 

机构地区：[1]中国地质调查局发展研究中心,北京100083 [2]中国地质科学院地质力学研究所,北京100081 [3]中国地质大学(北京),北京100083

出　　处：《新疆地质》2006年第1期30-32,T0002,共4页Xinjiang Geology

基　　金：原地质矿产部定向研究项目(地科定96-21)部分研究成果

摘　　要：金窝子金矿属于岩浆热液型金矿床,金矿化类型有石英脉型和蚀变糜棱岩型.金多呈独立金矿物形式出现,少许呈分散状,以银金矿为主,次为自然金,平均成色782.金矿物以粒间金、裂隙金、连生金和包体金等形式嵌布于黄铁矿、石英、方铅矿及闪锌矿等主要载金矿物中,且黄铁矿、石英较金属硫化物中占优势,黄铜矿中未见金矿物.金矿物形态各样,粒度以中细粒为主.金矿物特征反映出本区金矿床的成矿物质主要来源于变质岩,成矿作用与华力西、燕山期中酸性侵入岩有关.这与地质地球化学研究所获得的矿床成因认识相一致.Jinwozi gold deposits in southern of Xinjiang Uygur Autonomous Region ,belong to magmatic hydrothermal type, while the types of mineralization is classified as the quartz-vein type and altered mylonite type. Aurum occurs mainly as independent gold mineral, rarely as mechanical mixture, solid solution, and adsorbed matter in auriferous minerals. The essential gold mineral is Electrum and the auxiliary one is Gold. Gold mineral in the major Au-carrying minerals （quartz, pyrite, galena and sphalerite） occurs in the inter-granular, interlocking, crevice and enclosure forms. The contents and rate of Au/（Au＋Ag） of gold minerals in pyrite and quartz are higher than in the others, but there is not any gold mineral in chalcopyrite. Mainly being idiomorphic-granular and hypidiomorphic-granular and subordinately being veinlet, the golden minerals are commonly medium fine grained, measuring 0.05-0.005mm in diameter.These show that the source materials of the deposits were derived mainly from the metamorphic rocks and that the metallization of gold is closely related with Variscan-Indosinian intermediate-acid intrusive rocks.All above is in good consistence with the datd from the study on the deposit origin.

关 键 词：金矿物 赋存状态 金窝子 新疆 

分 类 号：P618.51[天文地球—矿床学]