东北地区富钴矿床成矿规律、成因类型与远景区预测  

Metallogenic Regularity, Genetic Type and Potential Prospects of Cobalt Deposits in Northeast China

作　　者：张勇[1] 丁建华[1] 松权衡[2] 张彤 邰彦德 孙景贵[5] Zhang Yong;Ding Jianhua;Song Quanheng;Zhang Tong;Tai Yande;Sun Jinggui(Institute of Mineral Resources,Chinese Academy of Geological Sciences/MNR Key Laboratory of Metallogenyand Mineral Assessment,Beijing 100037,China;Jilin Institute of Geological Survey,Changchun 130061,China;Geological Survey of Inner Mongolia,Hohhot 010020,China;Institute of Geological Sciences of Jilin Province,Changchun 130012,China;College of Earth Sciences,Jilin University,Changchun 130061,China)

机构地区：[1]中国地质科学院矿产资源研究所/自然资源部成矿作用与资源评价重点实验室,北京100037 [2]吉林省地质调查院,长春130061 [3]内蒙古自治区地质调查研究院,呼和浩特010020 [4]吉林省地质科学研究所,长春130012 [5]吉林大学地球科学学院,长春130061

出　　处：《吉林大学学报（地球科学版）》2023年第3期693-712,共20页Journal of Jilin University：Earth Science Edition

基　　金：国家自然科学基金项目(42172095);中央级公益性科研院所基本科研业务费(KK2105,KK2106);中国地质调查局项目(DD20190193,DD20190606,DD20221694)

摘　　要：钴具有特殊的物理化学性质,被广泛用于现代尖端技术领域中,因而部分国家将其列入战略矿产资源清单。钴矿形成的独立矿床较少,以共伴生矿床为主。我国是一个钴资源相对贫乏的国度,资源保有程度严重不足。目前,在我国东北地区发现并勘探出具有一定规模的共伴生钴矿床,其中既有与Cu共伴生矿床,又有与Cu-Ni-Fe共伴生矿床。为此,需要进一步总结成矿地质特征,分析潜力,为今后地质找矿工作提供借鉴。本文从东北地区钴矿床分布和地质特征角度出发,初步厘定该区钴矿的矿床成因类型为沉积-变质型矿床、岩浆型矿床、海相火山沉积-变质型矿床和矽卡岩型矿床4类;其中,沉积-变质型和岩浆型矿床分布较广,主要产在古元古代辽吉裂谷区;结合典型矿床地质特征、区域地球化学和地球物理特征,进一步圈定了28个远景区,包括A类远景区4个,B类远景区8个,C类远景区16个。建议4个A类远景区作为将来找矿勘查部署中优先重点关注的地区。Due to its unique physical and chemical properties,cobalt is widely used in modern advanced technology fields,so some countries have listed it as an important strategic critical resource.There are few independent cobalt deposits,and co-associated deposits are the main cobalt deposits.China is a country with relatively poor cobalt resources,with external dependence exceeding 90.0%.Many large and medium cobalt deposits have been discovered and explored in northeast China,including Cu-associated deposits and Cu-Ni-Fe co-associated deposits.Therefore,it is necessary to further summarize its metallogenic geological characteristics,analyze its resource potential,and provide a reference for future exploration.In this paper,cobalt deposits are classified into four main types,i.e.,sedimentary-metamorphic type,magmatic type,marine volcano-sedimentary-metamorphic type,and skarn type.The sedimentary-metamorphic type and magmatic type cobalt deposits are widely distributed,mainly in the Paleoproterozoic Liaoning-Jilin rift zone.Combined with the geological characteristics of typical deposits,regional geochemical and geophysical characteristics,28 prospect areas were further delineated,including 4 prospect areas of class A,8 prospect areas of class B,and 16 prospect areas of class C.Finally,four class A prospect areas are recommended as the priority areas to focus on in the deployment of prospecting and exploration in the future.

关 键 词：钴矿床 基本特征 成矿规律 资源潜力评价 中国东北 

分 类 号：P612[天文地球—矿床学] P618.12[天文地球—地质学]