江西德兴富家坞铜矿床中金银铼钴分布规律  

Distribution Regularities of Gold,Silver,Rhenium and Cobalt at the Fujiawu Copper Mine in Dexing Region,Jiangxi Province

作　　者：文鹏[1] 杨永强[1] 王传亮[1] 刘怀金[1] 辛江 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]新疆维吾尔自治区地质调查院,新疆乌鲁木齐830000

出　　处：《黄金科学技术》2015年第2期17-27,共11页Gold Science and Technology

基　　金：国家自然科学基金项目"成矿系统中成矿流体演化与成矿"(编号:41272110);公益性行业科研专项"德兴铜矿Re等元素分布规律研究"(编号:201311072-02)联合资助

摘　　要：德兴富家坞斑岩铜矿床是我国露天开采规模最大的斑岩矿床,除含主成矿元素Cu和Mo之外,还共(伴)生Au、Ag、Re和Co等有益组分。通过对德兴富家坞铜矿床地表采集的地球化学剖面样品进行微量元素和Au、Ag测试发现,Re、Ag在花岗闪长斑岩中的平均含量明显高于千枚岩,而Co、Au平均含量在千枚岩中较高;Re主要赋存于岩体接触带附近,Co主要赋存于斑岩体接触带外侧的中—弱蚀变带,Au主要富集在岩体接触带的外带,Ag在岩体接触带内外两侧均有较高浓集。4组成矿因子对应Cu-Ag-Zn-In、Er-Y-Ce-Pr-Ho-Eu-Gd-Tm-Dy-Y-La-Nd-Tb-Sm-Lu-Re-Mo-Cd-U、Co-Ni和|Au|-W成矿作用。Fujiawu copper mine is one of the largest porphyry deposits in form of strip mining in China,in addition to the main ore-forming elements, such as Cu,Mo, moreover, it contains useful components （partner） like Au, Ag, Re as well as Co.Through analysis of surface geochemical profile samples from the mine by testing trace elements, Au and Ag, it is found that the average values of Re and Ag in granite diorite porphyry are much better than that of the phyllite, however, the average level of Co, Au are higher in phyllite than that of the granite diorite porphyry.Re is primarily in the rock mass near the contact zone of porphyry, and Co is closely relative to outside of the contact zone, namely, weak alteration zone.Au is gathered in the outside of the contact zone, while, we find that Ag is with higher concentration both inside and outside the contact zone.Four groups of ore factor are corresponding to the mineralization of Cu-Ag-Zn-In,Er-Y-Ce-Pr-Ho-Eu-Gd-Tm-Dy-Y-La-Nd-Tb-Sm-Lu-Re- Mo-Cd-U, Co-Ni and丨Au丨-W, respectively.

关 键 词：富家坞铜矿 伴生元素 蚀变带 分布规律 因子分析 

分 类 号：P618.41[天文地球—矿床学] P618.5[天文地球—地质学]