云南冬瓜林金矿床原生叠加晕特征与深部找矿  

Primary superimposed halo features and deep ore-prospecting in the Donggualin gold deposit,Yunnan Province

作　　者：周向科[1,2] 王建国[1] 刘荫椿[3] 雷恒永 李光景 ZHOU Xiang-ke WANG Jian-Guo LIU Yin-chun LEI Heng-yong LI Guang-jing(School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China Geological Museum ofChina, Beijing 100034, China China Gold Science and Technology Co., Ltd., Beijing 100176, China Zhenyuan Company ofYunnan Gold Co., Ltd., Zhenyuan 666511, Yunnan, China)

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]中国地质博物馆,北京100034 [3]中国黄金集团公司科技公司,北京100176 [4]云南黄金有限责任公司镇沅分公司,云南镇沅666511

出　　处：《中国地质》2016年第5期1710-1720,共11页Geology in China

基　　金：国土资源部科技专项"地质遗迹标本采集;购置与综合研究"项目(121113000000160034)资助~~

摘　　要：冬瓜林金矿床位于哀牢山金矿带的镇沅金矿田。文章在野外地质工作的基础上,运用多元统计的方法,求得微量元素找矿标志;并根据地球化学各参数信息,计算出元素轴向分带序列,建立原生叠加晕理想模型,构建深部矿体预测指标,明确下一步的找矿方向。研究表明:(1)该矿床的成矿元素Au与元素Ni、Co、Cu、Mn、Sb、Sn关系密切,原生晕轴向分带序列从上到下为As-Bi-Mn-Pb-Sb-B-Sn-Cu-Co-Hg-Ni-Zn-Au-Ag-Mo;(2)矿体中前缘晕、尾晕共存现象明显,预示着矿体向下还有很大的延伸,深部找矿应在矿体的北东方向进行;(3)评价指标(B×As×Hg×Sb)D/(Mn×Ni×Co×Sn)D,是有效的预测深部矿体资源潜力指标。The Donggualin gold deposit is located in the Zhenyuan gold orefield of the Ailaoshan gold ore belt. Based on fieldinvestigation, the authors figured out the prospecting criteria of trace elements by multivariate statistical methods and, incombination with geochemical parameters information, counted out the axial zonation of the ore deposit, built the ideal zoningmodel of the primary superimposed halos, constructed criteria for evaluating the ore potential in depth and clearly indicated theorientation in search for deep orebodies. Some conclusions have been reached： （1）The ore-forming element Au is close to elementsNi, Co, Cu, Mn, Sb, Sn, and the axial zonation of the ore deposit from top to bottom is As-Bi-Mn-Pb-Sb-B-Sn-Cu-Co-Hg-Ni-Zn-Au-Ag-Mo. （2） The front halo elements and the rear halo elements are existent together, suggesting that the orebodiesextend in the deeper place; furthermore, deep ore prospecting should be carried out in the NE direction of the ore bodies. （3） Indexes such as（B×As×Hg×Sb）D/（Mn×Ni×Co×Sn）D can be used to predict the ore potentials in the deep portions of the orebodies.

关 键 词：原生晕分带 深部找矿 冬瓜林金矿床 云南 

分 类 号：P632.2[天文地球—地质矿产勘探] P618.51[天文地球—地质学]