江西省钴地球化学特征及找矿远景预测  

GEOCHEMICAL CHARACTERISTICS AND PROSPECTING PERSPECTIVE OF COBALT DEPOSITS IN JIANGXI PROVINCE

作　　者：王斌 艾海平 WANG Bin;AI Hai-ping(Fundamental Geological Survey,Jiangxi Geological Survey and Exploration Institute,Nanchang 330033,China)

机构地区：[1]江西省地质调查勘查院基础地质调查所,江西南昌330033

出　　处：《地质与资源》2024年第5期636-643,679,共9页Geology and Resources

基　　金：江西省地质调查研究院前瞻性项目“江西钴矿成矿规律及勘查选区预研究”(201906);中国地质调查局项目“江西省矿产资源潜力评价”(1212010813013)

摘　　要：江西省地处华夏古板块和扬子古板块结合部位,矿产资源丰富,形成有独立钴矿床.为了研究江西省钴矿的找矿远景,对前人的地质找矿成果、化探成果等进行了梳理,总结了江西省钴矿的地球化学特征、矿床分布情况、含钴建造及成矿类型等.研究发现,赣北扬子板块区Co含量明显较高,普遍在10×10^(-6)~20×10^(-6)之间;赣南华夏板块区Co含量明显偏低,一般为3×10^(-6)~12×10^(-6).以13.5×10^(-6)为异常下限,圈定了Co化探异常291处,异常面积约100.79 km2;划分了异常群7处.认为江西省主要的钴矿类型有层控-改造型(热液型)和风化淋漓型两类.在此基础上,划分了16处找矿远景区,其中A类1处、B类8处、C类7处.Jiangxi Province,located in the junction of Cathaysian Plate and Yangtze Plate,is rich in mineral resources,among which independent cobalt deposits are developed.To study the prospecting perspective of cobalt deposits in the province,the paper reviews the previous geological and geochemical exploration data,and summarizes the geochemical characteristics,deposit distribution,cobalt-bearing formations and metallogenic types of cobalt deposits.The results show that the Co content in Yangtze Plate of northern Jiangxi is high,generally in 10×10^(-6)-20×10^(-6),while that in Cathaysia Plate of southern Jiangxi is obviously lower,generally in 3×10^(-6)-12×10^(-6).Taking 13.5×10^(-6) as the anomaly threshold,291 Co geochemical anomalies are delineated,covering an area of 100.79 km^(2),which are divided into 7 anomaly groups.It is considered that stratabound-transformation(hydrothermal)and weathering-leaching are the two main types of cobalt deposits in Jiangxi Province.On this basis,16 prospecting perspective areas are divided,including 1 in Class A,8 in Class B and 7 in Class C.

关 键 词：地球化学特征 Co异常 含钴建造 找矿远景区 江西省 

分 类 号：P618.6[天文地球—矿床学]