【摘要】 东安金矿床是黑龙江省新近发现的大型浅成热液金矿床。受断裂和隐爆角砾岩带控制,赋存于中生代陆相火山—侵入岩及晚印支期碱长花岗岩强硅化带中。成矿与火山-侵入岩作用有密切成生关系。通过对矿区内矿化围岩和基底岩石的金丰度和稀土元素特征的研究,以及对石英中包裹体测温、盐度、液相成分、氢-氧同位素特征的研究,认为该矿床的成矿物质主要来源于基底变质岩;成矿温度为144℃～348℃;成矿深度约0.2km～1.0km;成矿时代为中燕山晚期,为一浅成热液低硫型金矿床。更多还原

【Abstract】 Dongan gold deposit is a newly discovered large scale epithermal gold deposit in Heilongjiang province controlled by fracture and fracture alteration belt. Dongan gold deposit is distributed in Mesozoic continental volcanic-intrusive rocks and late Indosinian strong silicification belt within alkali feldspar granite. The formation of deposit is closely related with volcanic intrusive rocks. The basement metamorphic rocks is the most important ore-forming material. The metallogenic temperature varies from 144℃～ 348℃. and the metallogenic depth is 0.2～10km. The deposit were formed in the late middle Yanshanian period.更多还原