陕西铧厂沟金矿南矿带构造叠加晕特征及深部找矿方向  

Characteristics of Structural Superimposed Halos and Deep Prospecting Direction in the South Ore Zone of Huachanggou Gold Deposit,Shaanxi Province

作　　者：胡博心 周鸿飞 屈海浪 曹易刚 白会良 王凌童 王立新[3] 杨昭克 李元申 HU Boxin;ZHOU Hongfei;QU Hailang;CAO Yigang;BAI Huiliang;WANG Lingtong;WANG Lixin;YANG Zhaoke;LI Yuanshen(Beijing Jinyou Geological Exploration Co.,Ltd.,Beijing 100011,China;School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China;Huachanggou Gold Mine of Lueyang County,Lueyang,Shaanxi 724312,China)

机构地区：[1]北京金有地质勘查有限责任公司,北京100011 [2]中国地质大学(北京)地球科学与资源学院,北京100083 [3]陕西略阳铧厂沟金矿有限公司,陕西略阳724312

出　　处：《现代地质》2021年第6期1515-1522,共8页Geoscience

基　　金：中国黄金集团有限公司地质科研项目“陕西略阳铧厂沟金矿矿山综合地质及成矿地质条件研究和找矿预测”(WKY201704)。

摘　　要：陕西略阳铧厂沟金矿AuⅠ矿体主要赋存于泥盆系三河口群第一岩性段第二岩性层中-薄层状微晶灰岩、泥质灰岩、中-厚层状结晶灰岩中。AuⅠ矿体作为矿山目前的主采矿体,其深部找矿方向还需要进一步研究。为指导铧厂沟金矿南矿带AuⅠ矿体深部找矿工作,对AuⅠ矿体进行了元素相关性分析、R型聚类分析以及R型因子分析和构造叠加晕研究。结果表明,As、Sb为前缘晕元素组合,Au、Ag、Pb为近矿晕元素组合,W、Sn、Bi为尾晕元素组合。AuⅠ矿体原生晕轴向分带序列从上至下为Sb-Pb-Co-Ag-As-Au。结合成矿元素空间分布特征,认为AuⅠ矿体在48线—96线深部存在头尾晕叠加特征,据此提出铧厂沟金矿南矿带AuⅠ矿体下一步找矿方向为96线—112线深部。The Au Ⅰ orebody of Huachanggou gold mine in Lueyang County, Shaanxi Province mainly occurs in the medium-thin bedded microcrystalline/argillaceous limestone and medium-thick bedded crystalline limestone in the second member of the Devonian Sanhekou Group(first formation). As the main orebody, the deep prospecting direction of Au Ⅰ orebody needs to be further studied. Therefore, this study conducted element correlation analysis, R-type cluster analysis, R-type factor analysis, and structural superposition halo research on the Au Ⅰ orebody. The results show that As and Sb are front halo element assemblage, and that Au, Ag and Pb are near ore halo element assemblage;W, Sn and Bi are tail halo element assemblage. The axial zoning sequence(from top to bottom) of the primary halo in Au Ⅰ orebody is Sb, Pb, Co, Ag, As, and Au. Combined with the spatial distribution characteristics of ore-forming elements, we considered that the Au Ⅰ orebody has the characteristics of head-tail halo superposition at depth of prospecting lines 48-96 and 16-32. Therefore, we proposed that the future prospecting direction of Au Ⅰ orebody in the South Ore Belt is at depth of prospecting lines 96-112 and 16-32.

关 键 词：西秦岭 陕西铧厂沟金矿 构造叠加晕 深部找矿 

分 类 号：P618.51[天文地球—矿床学]