东安金矿床控矿因素及成矿物质来源浅析  

Ore-Controled Facer and Ore-Forming Materal Orignate of the Dongan Gold Deposit, Heilongjiang Province

作　　者：于建波[1] 苏仁奎[2] 刘智明[2] 

机构地区：[1]吉林大学,长春130061 [2]黑龙江省有色金属地质勘查七七队,黑龙江绥化152054

出　　处：《黄金科学技术》2005年第6期8-11,共4页Gold Science and Technology

摘　　要：东安金矿床主要赋存于中燕山晚期潜流纹岩与印支晚期中粗粒碱长花岗岩接触带及外带交代石英岩中,少部分赋存于白垩系下统光华组(K1gn)英安岩和流纹岩中的交代石英岩带中。严格受近SN向张性断裂控制。其热液流体来源于中燕山晚期潜流纹岩体,在成矿晚期混合了部分大气降水。成矿物质主要来源于潜流纹岩体,并萃取了结晶基底上元古界一面坡群浅变质酸中性火山—细碎屑岩和赋矿围岩印支晚期中粗粒碱长花岗岩和中燕山晚期细粒碱长花岗岩部分成矿矿质和介质。The Dongan gold deposit occurs mainly in metasomatic - quartzite inter - out zone contacted with the late middle Yanshanian period latent rhyolite and the late Indo - chinese epoch alkali - feldspar granite. The minority occurs in metasomatic - quartzite zone contacted with the dacite （ that is in lower Cretaceous system Guanghua group） and ryolite. The ore - body is in control of SN extension fault strictly. Ore - forming fluids of mixed hydrothermal so：ution came from the late middle Yanshanian period latent rhyolite. Ore - forming material came from latent rhyolite, and extract from crystalline basement that is upper Proterozoic Erathem Yimianpo group epizonal metamorphism inter- mediate acidity volcano - fine grained fragmental rock and wallrock, the late middle Yanshanian period fine grained granite, the late Indo- chinese epoch alkali -feldspar granite.

关 键 词：控矿因素 成矿物质来源 黑龙江省东安金矿 

分 类 号：P618.51[天文地球—矿床学]