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贵州兴义普克金矿区土壤地球化学异常特征及找矿方向

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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1∶20万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1∶1万土壤地球化学测量,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.
Soil geochemical anomaly characteristics and prospecting direction of Puke gold mining area in Xingyi County,Guizhou
Puke gold deposit is located in the peripheral area to the southwest of the famous Nibao gold depos-it,and it is in the same geotectonic environment as Nibao deposit.They have basically the similar strati-graphic characteristics and tectonic style,thus there is shown for a good geological condition of mineraliza-tion.In this paper,1∶10,000 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 ele-ments(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 effec-tiveness of soil geochemical survey in gold exploration work in this area.

Puke gold depositsoil geochemical surveygeochemical anomalyXingyi County of Guizhou

杨志书、陈强、刘旭

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贵州省地质矿产勘查开发局一○六地质大队,贵州遵义 563000

普克金矿 土壤地球化学测量 化探异常 贵州兴义

贵州省地质矿产开发局地质科研项目

黔地矿科合[2016]16号

2024

矿产与地质
桂林矿产地质研究院

矿产与地质

CSTPCD
影响因子:0.42
ISSN:1001-5663
年,卷(期):2024.38(4)