黑龙江东安金矿地质及地球化学特征  

GEOLOGICAL AND GEOCHEMICAL FEATURES OF THE DONGAN GOLD DEPOSIT IN HEILONGJIANG

作　　者：郭继海[1] 汪长生[1] 石耀军[1] 

机构地区：[1]黑龙江省有色金属地质勘查七0七队,绥化152054

出　　处：《地质与勘探》2004年第4期37-41,共5页Geology and Exploration

基　　金：国家资源补偿费项目 (编号 :2 0 0 1-2 );黑龙江省资源补偿费项目 (编号 :SD2 0 0 1-2 0;SD2 0 0 2 -2 3 1)资助

摘　　要：东安金矿是在黑龙江省发现的大型浅成低温热液型金矿床。该矿床产于下白垩统火山岩—潜火山岩环境中 ,受库尔滨断裂的次级断裂控制。近矿围岩硅化强烈、冰长石化、绿泥石化、绢云母化发育 ,流体包裹体研究表明 ,主要成矿过程发生在 14 4℃～ 348℃之间 ,成矿深度为 0 2～ 1 0km ,成矿流体液相成分主要为K+ 、Cl-等 ,气相成分主要为H2 O和CO2 ,按照现行的低温热液金 -银矿床的分类原则 ,该矿床应属低硫化型。文章通过对东安金矿地质及地球化学特征的研究 ,对于确定矿床成因 ,进行成矿预测 ,有一定的借鉴意义。The Dongan gold deposit discovered in the Heilongjiang province is a large epithermal deposit. The deposit is distributed in the volcanic and subvolcanic rocks of the lower Cretaceous and controlled by Kuerbin fault. Wallrock alterations are mainly strong silicification,orthoclase,chlorite and muscovite. Fluid inclusion studies show that the main ore-forming process occurred in the temperature range of 144～348 ℃ and mineralizing depth was as 2～10km. Liquid compositions of the fluids were mainly K + and Cl - and gas compositions were H_2O and CO_2. According to current classification of epithermal gold-silver deposit,the deposit belongs to the low-sulfide epithermal deposit. Based on analyses of geology and the geochemistry,genesis of the Dongan gold deposit was defined,prospecting prognosis was proposed.

关 键 词：地球化学 东安金矿 黑龙江 

分 类 号：P618.51[天文地球—矿床学] P632[天文地球—地质学]