吉林夹皮沟金矿本区矿床成矿及找矿远景评价  

The Evaluation on the Ore-formation and Ore-exploration Prospect of Jiapigou Goldmine in Jilin Province

作　　者：侯刚 孙忠实[2] 王爱平 

机构地区：[1]中金集团夹皮沟矿业有限公司下戏台矿,吉林桦甸132411 [2]吉林大学,吉林长春130061

出　　处：《有色矿冶》2009年第2期1-5,共5页Non-Ferrous Mining and Metallurgy

摘　　要：吉林夹皮沟成矿带金矿成矿作用与太古宙变质岩系、幔源岩浆活动、韧性剪切作用密切相关,成矿流体以地幔流体为主,成矿物质主要来源于地幔。地幔活动形成的韧性剪切带及其伴生的次一级断裂构造不仅是成矿流体的运移通道,而且是矿体就位的有利空间。本文论述了夹皮沟主要成矿带成为北西大型韧性剪切带及其伴生的次一级构造带北东构造带(即本区矿床)的基本地质条件-太古宙变质岩系广泛分布,岩浆岩脉、韧性-脆性构造活动强烈;金矿化体(石英脉)受韧性剪切带两侧的次一级断裂控制,围岩蚀变是绢英岩化、硅化、绿泥石化、黄铁矿化等。找矿研究表明,本区矿床深部同样具有较大的成矿潜力,因此,夹皮沟本区矿床成矿带深部应具有良好的成矿远景(第二成矿梯段)。The ore--formation function in Jiapigou Goldmine ore--formation belt is closely related to the Arcbean metamorphic rocks, mantle--derived magmatism and ductile shearing. The ore--formation fluid is mainly mantle fluid and the ore--formation materials mostly come from mantle. The ductile shearing belt through mantle activity and its concomitant secondary fault structure are not only the migration channel of ore -- information fluid but the advantageous space of ore--body emplacement. The paper discusses the basic geological conditions, under which the main part of Jiapigou Gotdmine becomes a large northwestward ductile shearing belt and its concomitant secondary formation belt -northeastward formation belt （i. e. the ore bed in this area）, are widely distributed Archean metamorphic rocks, molten magma and dike, and strong ductile--brittle structure activity; the gold mineral body （quartz vein） is controlled by the secondary fracture on the both sides of the ductile shearing belt, and wall rock alteration is sericite-- quartz alteration, silicification, chloritization, and pyritization. The ore--exploration study demonstrates the deep part of the mineral bed in this area has the same large ore--formation potentiality, so the deep part of mineral--bed ore-- formation belt in Jiapigou area should be of good ore--formation prospect （the second ore--formation bench）.

关 键 词：金成矿带 成矿条件 找矿远景 

分 类 号：P618.51[天文地球—矿床学]