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《Gold Science and Technology》 2017-04
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Prospecting Effect of Stream Sediment Survey in Zhongzhai-Shilipu Area of West Qinling Mountains

CHEN Caihua;SUN Bing;CHEN Ji;CHEN Lizi;No.5 Gold Geological Party of CAPF;  
Zhongzhai-Shilipu area is located in the west of the Zhaishang super-large gold mine area,and its metallogenic conditions are favorable.The 1 ∶50 000 stream sediment survey is carried out in this area.The geochemical characteristics of 17 elements in this area are studied,which showed that the stratigraphic units of Zhongzhai-Shilipu area are the favorable geochemical blocks.Using the method of mathematical statistics,the relative abundance,relative coefficient of variation and enrichment degree of ore-forming elements were analyzed,and the favorable parts of polymetallic mineralization were pointed out.The metallogenic potential of each stratigraphic unit was evaluated by calculating prospecting potential index(k× Cv)of ore-forming elements in different strata.The correlative character and spatial distribution of elements are studied,the spatial distribution characteristics and combination relations are discussed by R cluster analysis of 17 elements from 3 904 samples in the working area.According to the abnormal geochemical characteristics,strata and fault structure,four mineralization prospects are selected.On the basis of carrying out abnormal verification and deploying the project,three Au-Sb ore occurrences were found,and achieved good prospecting effect.
【Fund】: 中央地质调查基金项目“西北沿边及特殊地区地质矿产调查”二级项目之“甘肃省岷县1∶5万中寨—十里铺幅区域地质矿产调查”子项目(编号:12120114008901)资助
【CateGory Index】: P618.51
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