Three-dimensional Modeling of Ore-forming Elements and Mineralization Prognosis for the Yechangping Mo Deposit,Henan Province,China  

作　　者：DING Gaoming JI Genyuan YAN Guolong XU Yongzhong WANG Kunming XIAO Chun WANG Quanle GUO Dongbao 

机构地区：[1]China National Administration of Coal Geology,Beijing 100038,China [2]MNR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,CAGS,Beijing 100037,China [3]China Gold Group Geological Co.,Ltd.,Beijing 100011,China [4]China Gold Group ZhongYuan Mining Co.,Ltd.,Sanmenxia,Henan 472000,China [5]Lanzhou Mineral Exploration Institute of Gansu Nonferrous Metal Geological Exploration Bureau,Lanzhou 730046,China

出　　处：《Acta Geologica Sinica(English Edition)》2024年第3期736-752,共17页地质学报（英文版）

基　　金：supported by the Key Research Project of China Geological Survey(Grant No.DD20230564);the Research Project of Natural Resources Department of Gansu Province(Grant No.202219)。

摘　　要：Three-dimensional geochemical modeling of ore-forming elements is crucial for predicting deep mineralization.This approach provides key information for the quantitative prediction of deep mineral localization,three-dimensional fine interpolation,analysis of spatial distribution patterns,and extraction of quantitative mineral-seeking markers.The Yechangping molybdenum(Mo)deposit is a significant and extensive porphyry-skarn deposit in the East Qinling-Dabie Mo polymetallic metallogenic belt at the southern margin of the North China Block.Abundant borehole data on oreforming elements underpin deep geochemical predictions.The methodology includes the following steps:(1)Threedimensional geological modeling of the deposit was established.(2)Correlation,cluster,and factor analyses post delineation of mineralization stages and determination of mineral generation sequence to identify(Cu,Pb,Zn,Ag)and(Mo,W,mfe)assemblages.(3)A three-dimensional geochemical block model was constructed for Mo,W,mfe,Cu,Zn,Pb,and Ag using the ordinary kriging method,and the variational function was developed.(4)Spatial distribution and enrichment characteristics analysis of ore-forming elements are performed to extract geological information,employing the variogram and w(Cu+Pb+Zn+Ag)/w(Mo+W)as predictive indicators.(5)Identifying the western,northwestern,and southwestern areas of the mine with limited mineralization potential,contrasted by the northeastern and southeastern areas favorable for mineral exploration.

关 键 词：3D geochemical model ore-forming elements GEOSTATISTICS deep mineralization prediction Yechangping Mo deposit 

分 类 号：P618.65[天文地球—矿床学]