四川省牦牛坪矿床外围隐伏稀土矿体第二阶段找矿突破及启示  

Second-phase prospecting breakthrough and revelation of hidden rare earth orebody in peripheral Maoniuping deposit in Sichuan Province

作　　者：于扬[1] 王登红[1] 刘善宝[1] 王伟[2,3] 于沨 赵芝 纪德宝[3] 杨永顺 曾思敏 范文辉 俄波斯甲 YU Yang;WANG Denghong;LIU Shanbao;WANG Wei;YU Feng;ZHAO Zhi;JI Debao;YANG Yongshun;ZENG Simin;FAN Wenhui;E Bosijia(MLR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China;Chengdu University of Technology,Sichuan Chengdu 610059,China;Sichuan Geology and Minerals Group Co.,Ltd.,Sichuan Chengdu 610017,China;Xining Center of Natural Resources Comprehensive Survey,China Geological Survey,Qinghai Xining 810000,China;Sichuan Huaxing Geological Design Institute Co.,Ltd.,Sichuan Xichang 615000,China)

机构地区：[1]自然资源部成矿作用与资源评价重点实验室,中国地质科学院矿产资源研究所,北京100037 [2]成都理工大学,四川成都610059 [3]四川省地质矿产(集团)有限公司,四川成都610017 [4]中国地质调查局西宁自然资源调查中心,青海西宁810000 [5]四川华行地质设计院有限公司,四川西昌615000

出　　处：《中国地质调查》2024年第6期8-14,共7页Geological Survey of China

基　　金：中国地质调查局“战略新兴产业矿产地质调查(编号:DD20230034)”“四川康定—云南个旧稀有稀土矿产地质调查(编号:DD20230290)”及“中国矿产地质志续编与产品服务(编号:DD20221695)”项目联合资助。

摘　　要：四川省牦牛坪矿床是仅次于白云鄂博和芒廷帕斯的全球第3大稀土矿床,在寻找接替资源、保障中国稀土资源优势地位方面极具潜力,近期在其南部外围和北部外围均取得了第二阶段找矿突破。通过在牦牛坪矿床外围开展以稀土为主的综合调查评价工作并经钻探验证,在其北部外围环单沟发现了隐伏的厚大富稀土、钼矿体,钻孔ZK4501总稀土氧化物平均含量达2%;在其南部外围空白区探获50层氟碳铈矿-霓辉石-萤石-重晶石脉型、氟碳铈矿-萤石-重晶石-方解石脉型、氟碳铈矿-霓辉石-重晶石脉型及氟碳铈矿-萤石-方解石脉型稀土矿体。这几类品位高、易采选新矿体的发现是自新一轮找矿突破战略行动实施以来,在稀土矿产勘查方面取得的又一重要突破,对提升中国第二大稀土资源基地的资源保障能力具有重要意义。Maoniuping deposit in Sichuan Province stands as the worlds third-largest rare earth deposit,follow-ing Baiyunebo and Mountain Pass,which has great potential in finding alternative resources and ensuring Chinese rare resource advantage.Recently,second-phase exploration breakthrough has been achieved in the southern and northern peripheries of Maoniuping deposit.A concealed thick and rich rare earth-molybdenum orebody was discovered in the northern periphery around Huandangou,through comprehensive survey and evaluation work in the peripheries of Maoniuping deposit,and verified by drilling and the average total rare earth oxide content in borehole ZK4501 reaches 2%.Fifty layers of rare earth orebodies have been explored in the southern periphery,including bastnasite-(Ce)-aegirine-fluorite-barite vein type,bastnasite-(Ce)-fluorite-barite-calcite vein type,bastnasite-(Ce)-aegirine-barite vein type,and bastnasite-(Ce)-fluorite-calcite vein type.The discovery of these new orebodies with high grade and easy mining is another significant breakthrough in rare earth mineral exploration since the implementation of the new round of strategic action for breakthrough in praspecting which is of great significance for enhancing the resource security capabilities of Chinas second-lar-gest rare earth resource base.

关 键 词：稀土矿体 稀土找矿突破 关键性矿产 矿产调查工程 牦牛坪矿床外围 

分 类 号：P618.6[天文地球—矿床学] P618.7[天文地球—地质学]