摘要
内蒙古乌拉山—大青山地区位于华北地台北缘中西段,是我国前寒武纪变质岩系的主要发育地区之一,又是新太古—古元古代绿岩带广泛分布的地区,赋存着与绿岩带有关的金矿。兵图金矿产于这套绿岩带的乌拉山群中,从成矿物质来源、矿体产出部位对兵图金矿的成因及找矿方向加以探讨。综合研究表明,矿区金的成矿物质来源是多源、多阶段的,其成矿是在区域变质、混合岩化、糜棱岩化和岩浆热液等因素的共同作用下,成矿物质经过多阶段迁移沉淀而富集成矿;矿区的含金变质岩系(新太古代绿岩带乌拉山群)、韧—脆性剪切变形带和弱碱性岩浆岩产出的部位为找矿的有利地段。
The Wulashan-Daqinshan region in Inner Mongolia is located in the northwest segment of north China Block,and it is the one of the major distributions of pre-Cambrian metamorphic rock series in our country,and also the greenstone belt of the Neoproterozoic and Plaeoproterozoic widely developed in the area.The Gold deposits richly developed that related with the greenstone belt in the area.Bingtu gold deposit occurred in the Wulashan group of the greenstone belt.We try to discuss on the genesis of the gold deposit,and its searching direction accord-ing to studying its material origin of the mineralization and ore body position.As the comprehensive study showed,the source of gold metallogenic material in mining area is from different ways and multi-stages,the mineralization is under the co-action of the regional metamorphism,migmatitization,mylonitize and lava hydrotherm,after multi-stage move and precipitation,the ore-forming elements are enriched and formed into minerals;the advantageous quarter to find minerals are gold potentiality of metamorfic rocks（new Archaean greenstone belt Wulashan Group）,the tough-brittle shear deformation belt and the weak alkaline magmatic rocks output regions.
出处
《黄金科学技术》
2010年第4期1-5,共5页
Gold Science and Technology
基金
内蒙古自治区地质勘查项目"乌兰察布市袁家房子等四幅1/5万区域矿产调查"(编号:(2005)矿调1-8)资助
关键词
物质来源
矿床成因
找矿方向
兵图金矿
内蒙古
Material origin
Genesis
Prospecting direction
Bingtu gold deposit
Inner Mongolia
