安徽池州马头铜钼矿主成矿元素分布特征及富集机理  

Distribution and enrichment mechanism for Matou copper-molybdenum deposit in Anhui

作　　者：陈雪[1] 马春[1] 刘荣芳[1] 

机构地区：[1]江苏省有色金属华东地质勘查局,江苏南京210007

出　　处：《地质学刊》2014年第4期575-582,共8页Journal of Geology

基　　金：国土资源部老矿山深部及外围找矿项目"江苏省宁芜北段东带矿山密集区深部铁矿战略性勘查"(1212011220681)

摘　　要：马头铜钼矿床是江南过渡带池州段达到详查级别的矿床。根据该矿床的矿化分布特征、6个钻孔的成矿元素分析结果,结合镜下鉴定分析认为,马头铜钼矿床岩浆热源中心位于15线以南的西山岩体深部,成矿流体运移方向呈南南西→北北东、西山岩体深部→浅部、岩体中心→远离岩体的迁移规律。Cu、Mo、W等金属元素的迁移、沉淀、富集不是某一种因素单独造成的,而是各种物理化学和地质因素共同作用的结果,是不同期次成矿流体产物的叠加。研究区成矿流体至少有2期,一期为富含以钼为主、伴生铜的热液,另一期为以富铜为主的热液。Matou copper-molybdenum deposit was one of the few general exploration deposits in Chizhou section of Jiangnan transitional zone,and its molybdenum resources reached medium-sized. According to mineralization distribution characteristics,the analysis results of six drilling of ore-forming elements,and in combination with microscopic identification and observation,the authors thought that the magmatic heat centre of Matou copper-molybdenum was located in the deep of Xishan rock mass,south of the prospecting line 15.The directions of ore-forming fluid migration were characteristic of SSW to NNW trend,from deep to shallow of Xishan rock mass,from rock mass center to the distant place. Metals such as Cu,Mo,W migration,precipitation and enrichment were caused by the combination of various physical and chemical and geological factors. The ore-forming fluids were at least of two phases,one period for rich was given priority to molybdenum associated with hydrothermal copper,the other was given priority to copper-rich hydrothermal fluid.

关 键 词：成矿元素 富集机理 矿化特征 马头铜钼矿 安徽池州 

分 类 号：P618.41[天文地球—矿床学] P618.65[天文地球—地质学]