内蒙古大红山晶质石墨矿床地质特征及找矿标志  

Geological characteristics and prospecting signs of Dahongshan crystalline graphite deposit in Inner Mongolia

作　　者：冯军成 周秀峰 段留安 张朝锋 李海军[4] 高俊飞 刘延虎 黄利锋 FENG Juncheng;ZHOU Xiufeng;Duan Liu’an;ZHANG Chaofeng;LI Haijun;GAO Junfei;LIU Yanhu;HUANG Lifeng(Inner Mongolia Second Geological and Mineral Exploration and Development Co.,Ltd.,Bayannaoer 015000,Inner Mongolia,China;Yantai Coastal Geological Survey Center of China Geological Survey,Yantai 264000,Shandong,China;Jiangxi Engineering Laboratory on Radioactive Geoscience and Big Data Technology,East China University of Technology,Nanchang 330013,Jiangxi China;Inner Mongolia Land Resources Exploration and Development Co.,Ltd,Hohhot 010020,Inner Mongolia,China)

机构地区：[1]内蒙古第二地质矿产勘查开发有限责任公司,内蒙古巴彦淖尔015000 [2]中国地质调查局烟台海岸带地质调查中心,山东烟台264000 [3]东华理工大学江西省放射性地学大数据技术工程实验室,江西南昌330013 [4]内蒙古国土资源勘查开发有限责任公司,内蒙古呼和浩特010020

出　　处：《矿产勘查》2023年第1期69-77,共9页Mineral Exploration

基　　金：放射性地质与勘探技术国防重点学科实验室开放基金项目(2020RGET10)资助。

摘　　要：内蒙古大红山晶质石墨矿床位于阴山隆起的渣尔泰山中—新元古代裂谷带,矿体赋存于中—新元古界蓟县系渣尔泰山群阿古鲁沟组二段的炭质板岩中,目前共圈定矿体2条,其中Ⅰ号矿体为主矿体。本文立足于区域地质与矿产勘查资料,结合前人研究成果,在成矿地质背景、矿床与矿体特征、样品化学分析、矿石矿物赋存状态及特征研究的基础上,总结了内蒙古大红山地区晶质石墨矿床的成矿地质特征及找矿标志。研究表明:(1)大红山晶质石墨矿床是经区域变质作用而形成的区域变质型矿床;(2)该矿床的成矿物质主要来源于变质黏土岩和粉砂质页岩中的有机物;(3)含炭粉砂细晶灰岩与含炭粉砂质板岩接触部位,含矿岩石形成的负地貌是找矿的有利地区。The Dahongshan crystalline graphite deposit in Inner Mongolia is located in the middle-Neoproterozoic rift zone of the Zha’ertaishan in the Yinshan uplift. The ore body occurs in the carbonaceous slate of the second member of the Agulugou Formation of the Zha’ertaishan Group in Jixian System of Middle Neoproterozoic. At present, there are 2 ore bodies to be found in the ore area, of which No.1 ore body is the main ore body. Based on regional geological and mineral exploration data, combined with previous research results, and on the basis of metallogenic geological background, characteristics of deposits and ore bodies, chemical analysis of samples, occurrence state and characteristics of ore minerals. This paper summarizes the metallogenic geological features and prospecting signs of crystalline graphite deposits in the Dahongshan area of Inner Mongolia Studies have shown that(1) The Dahongshan crystalline graphite deposit is a regional metamorphic deposit formed by regional metamorphism;(2) The ore-forming materials of this deposit are mainly derived from organic matter in metamorphic claystone and silty shale;(3) The negative landform formed by the ore-bearing rock at the contact position between the carbon-bearing silt fine-crystalline limestone and the carbon-bearing silt slate is a favorable area for ore prospecting.

关 键 词：地质特征 找矿标志 大红山晶质石墨矿床 内蒙古 

分 类 号：P618.42[天文地球—矿床学]