摘要
金厂金矿床产于岩浆岩内部,主要的矿(脉)体类型有角砾岩型、岩浆穹隆裂控型,各类矿(脉)体在形态、产状、容矿构造特征、矿石类型、矿化特征和蚀变特征等方面有明显区分特征。NE、NW、近EW、近SN向断裂是主要控岩控矿断裂,岩浆侵入时形成的环状断裂、放射状裂隙和角砾岩构造是主要容矿构造。与成矿关系最为密切的断裂构造为NW向断裂和NE向断裂,相应的控制了燕山晚期闪长玢岩和花岗斑岩的侵入。燕山晚期闪长玢岩侵入时,在早期岩浆岩中的断裂交汇部位形成了侵入角砾岩型矿体,在断裂交汇与燕山晚期岩体接触带部位形成了塌陷角砾岩型矿体;花岗斑岩岩浆侵入时形成的穹隆构造控制了环状、放射状矿脉。下一步找矿方向为寻找穹隆构造南西部环状、放射状矿体,穹隆内部深部隐伏的环状、放射状矿体;燕山晚期侵入体接触带与断裂构造交汇部位角砾岩型矿体。
Jingchang gold deposit occurs in inner magmatic rock, the main types of ore bodies （lodes） are breccia type controlling type and magmatic dome type, and all types of orebodies （lodes） have distinctive characteristics in form, shape,lode features, host structure, ore features, mineralization, alteration and ore-controlling factors. NE, NW, near-EW, near-SN trending faults are the primary rock-controlling faults, and circular faults, radial fissures and breccia structure formed during magma intrusion are responsible for the host structure. NW and NE fault closely related to the metallogenesis controlled the incursion of later Yanshanian diorites porphyrite and granites porphyry. Among the late Yanshanian diorite porhyrite magma,junction of faults controls the occurrence of incursive breccias structure; contact zone of late Yanshanian magma and junction of faults came to be collapsed breccias structure ; granite magmatic dome structures control circular and radiant structured orebodies. The further ore-prospecting targets are circular and radiant structures occurred in south-western part of the dome where circular and radiant orebodies are buried in deep inner dome, and breccia type orebodies in the junction of intrusion contact zone of late Yanshanian magma and fault struc- tures.
出处
《黄金》
CAS
2013年第11期20-24,共5页
Gold
基金
中国人民武装警察部队黄金指挥部黄金专项(HJ08-07-1)
中国地质调查局危机矿山接替资源找矿专项(20089925)
关键词
矿(脉)体类型
构造控岩控矿规律
找矿方向
金厂金矿床
黑龙江
orebody （lode） type
structural ore-controlling and ore-controlling regularities
ore-prospecting direc-tion
Jinchang gold deposit
Heilongjiang.Province
作者简介
肖力（1971-），男，江西龙南人，高级工程师，主要从事金矿地质研究工作；河北省廊坊市丰盛路159号，中国人民武装警察部队黄金地质研究所，065000
