贵州兴义普克金矿区土壤地球化学异常特征及找矿方向  

Soil geochemical anomaly characteristics and prospecting direction of Puke gold mining area in Xingyi County,Guizhou

作　　者：杨志书 陈强[1] 刘旭[1] YANG Zhishu;CHEN Qiang;LIU Xu(Geological Team No.106,Guizhou Bureau of Geology and Mineral Exploration and Development,Zunyi 563000,Guizhou,China)

机构地区：[1]贵州省地质矿产勘查开发局一〇六地质大队,贵州遵义563000

出　　处：《矿产与地质》2024年第4期743-752,778,共11页Mineral Resources and Geology

基　　金：贵州省地质矿产开发局地质科研项目“贵州省兴义市普克金矿基于构造和蚀变研究的深部找矿预测”(编号:黔地矿科合[2016]16号)资助。

摘　　要：贵州省普克金矿区位于著名的黔西南泥堡金矿西南方向的外围区域,与泥堡金矿处于相同的大地构造环境,地层特征、构造样式基本相同,成矿地质条件良好,且早期120万水系沉积物地球化学测量成果显示普克金矿区内Au、Sb、As异常区域呈现较好的重叠关系。为进一步缩小找矿工作范围,文章通过在普克金矿区开展11万土壤地球化学测量,在统计分析12个被测元素变化系数、富集离散程度的基础上,结合聚类分析、相关分析、因子分析揭示元素组合规律,结果表明As、Sb、Cu、Hg等元素是区内寻找金矿的重要指示元素。文章采用平均值±3倍标准差的方法确定各元素的异常下限,并据此在普克金矿区内圈定了4处找矿指示元素叠加异常区域(HS-1~HS-4),其中有利找矿靶区2处。研究结果揭示了土壤地球化学在本区找矿的有效性。Puke gold deposit is located in the peripheral area to the southwest of the famous Nibao gold deposit,and it is in the same geotectonic environment as Nibao deposit.They have basically the similar stratigraphic characteristics and tectonic style,thus there is shown for a good geological condition of mineralization.In this paper,110,000 soil geochemical survey is performed in order to explore for the prospecting potential.By analyzing the variation coefficient of elements,element enrichment dispersion characteristics of the 12 elements by soil geochemical survey in the Puke area,and cluster analysis,correlation analysis and factor analysis,this paper takes As,Sb,Cu,and Hg as the important indicator elements for ore prospecting in the area.The method of mean±3 times standard deviation is used to study the geochemical anomalies and determine the lower limits of the anomalies.Four comprehensive anomalies of important indicator elements(HS-1~HS-4)are delineated.Combined with the regional metallogenic background and geological characteristics of the study area,two favorable target areas are delineated.The study result reveals the effectiveness of soil geochemical survey in gold exploration work in this area.

关 键 词：普克金矿 土壤地球化学测量 化探异常 贵州兴义 

分 类 号：P618.51[天文地球—矿床学] P632[天文地球—地质学]