小秦岭中矿带金矿田成矿构造分析  

Analysis on the Mineralization Structure of Gold Orefield in Xiaoqinling Midle-orebelt

作　　者：王杏村[1] 牛树银[2,3] 燕建设[1] 孙卫志[1] 孙爱群[2] 冯建之[1] 陈超[2,3] 徐建昌[1] 王社全[1] 崔燮祥[1] 王铮[2] 李斌[2] 

机构地区：[1]河南省地质矿产勘查开发局第一地质调查队河南省金银多金属成矿系列与深部预测重点实验室,河南洛阳471023 [2]石家庄经济学院资源学院,河北石家庄050031 [3]中国地质大学(北京)地球科学与资源学院,北京100083

出　　处：《黄金科学技术》2012年第4期96-103,共8页Gold Science and Technology

基　　金：河南省2006年度地质勘查项目补助资金项目"河南省灵宝市小秦岭金矿田中深部金矿远景资源调查评价"(编号:[2006]659);公益性行业科研专项经费项目"我国典型金属矿科学基地研究"(编号:200911007)联合资助

摘　　要：小秦岭金矿田中矿带是在老鸦岔背形翼部韧—脆性剪切带的基础上由含矿流体贯入形成的含金石英脉,其不仅延伸较长、延深较大,而且矿脉较宽,展布有文峪、东闯、杨寨峪、长安岔和金硐岔等大中型金矿。在概述成矿地质背景、归纳矿脉地质特征的基础上,分析了该区成矿地质作用,认为成矿流体主要来自深源,通过地幔热柱多级演化,贯入到早期韧—脆性剪切带中积聚结晶,形成一条或多条规模较大的含金石英脉,甚至出现研究区主矿脉所占有的金属储量超过矿区50%～90%的金属储量的现象。在今后的工作中,建议不要依据矿权的划分来评价矿床规模,而应根据矿脉的自然展布来统筹评价矿床规模,包括指导矿区深部和外围勘查工作。The middle belt of Xiaoqinling gold field is ore-bearing fluid penetration ductile and brittle shear zone of Laoyachan antiform wing formation of auriferous quartz veins.It is not only of long extension, larger extending and wide veins.Distribution has large and medium-sized gold mine of Wenyu, Dongchuang,Yangzhaiyu, Chang＇ an- cha,Jindongeha and other.We reviews background of metallogenic geological,analyze the characteristics of ore- controlling structures, discuss the ore-forming.The studies indicate that ore-forming fluid comes mainly from deep source,through the multistage evolution of mantle plume,penetration to the ductile shear zone of accumulation and mineralization, formation of gold-bearing quartz veins.Even a mother lode gold reserves to the whole mining area from 50% to 90%.We recommended not to evaluate the scale of ore deposits according to mining right,but to the natural distribution, including guiding mining deep and peripheral prospecting.

关 键 词：成矿作用 构造控矿 幔枝构造 资源评价 豫西地区 

分 类 号：P618.51[天文地球—矿床学]