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内蒙古额济纳旗梧桐井铜矿区土壤地球化学特征及找矿预测 被引量:5

Geochemical Characteristics of Soils in the Wutongjing Copper Deposit, Ejinaqi, Inner Mongolia and Their Implication for Mineral Prospecting
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摘要 为优选内蒙古额济纳旗梧桐井铜矿区的找矿靶区,在充分了解该区地质特征的基础上进行了1:10000的土壤地球化学测量。对Cr、Co、Ni、Cu、Zn、Mo、Sn、Pb、Bi、Au十种微量元素的含量特征及分形特征分析显示,Cu、Mo、Pb、Au元素为区内成矿有利元素。使用统计学软件SPSS25对10种元素数据进行降维,划分出Cr-Co-Ni、Sn-Pb-Zn、Cu-Bi-Au、Mo四组元素组合;对单元素采用含量-频数分形法进行数据处理,对元素组合采用累频法求取异常下限,对单元素和元素组合平面异常图进行套合,结合异常特征及地质成矿条件共圈定出4个成矿靶区。成矿前景评价表明,A-1靶区是寻找铜多金属矿的重点勘查区。 The purpose of this work was to optimize the prospecting target in the Wutongjing Cu deposit, Ejinaqi, Inner Mongolia. A soil geochemical survey at scale of 1:10000 was conducted in this area based on the full understanding of the geological characteristics of this area. The analysis of content characteristics and fractal characteristics of ten trace elements including Cr, Co, Ni, Cu, Zn, Mo, Sn, Pb, Bi and Au shows that Cu, Mo, Pb and Au are favorable elements for mineralization in the area. The statistical SPSS25 software was used to reduce the dimension of data of ten elements of samples. Then four groups of element association including Cr-Co-Ni, Sn-Pb-Zn, Cu-Bi-Au, and Mo have been classified. The content-frequency fractal method was employed to process data of single element. The anomaly lower limits of element associations were calculated by using the cumulative frequency method. Based on the superimposition of plane anomaly maps of single element and element associations and the combination of element anomaly characteristics and geological ore-forming conditions, four ore-prospecting targets have been outlined. Based on the evaluation of metallogenic prospects of four targets, the A-1 target is considered as a key exploration area for copper polymetallic ore.
作者 张文博 罗先熔 赵欣怡 李超 商振城 ZHANG Wen-bo;LUO Xian-rong;ZHAO Xin-yi;LI Chao;SHANG Zhen-cheng(Institute of Concealed Deposit Prediction,School of Geoscience,Guilin University of Technology,Guilin Guangxi 541004,China)
出处 《矿物岩石地球化学通报》 CAS CSCD 北大核心 2022年第2期361-373,共13页 Bulletin of Mineralogy, Petrology and Geochemistry
基金 国家重点研发计划项目(2016YFC0600603,2017YFC0602604HT02) 桂林理工大学科研启动基金资助项目(GUTQDJJ2019166)。
关键词 土壤地球化学 铜金多金属矿 元素异常特征 找矿预测 内蒙古额济纳旗 soil geochemistry copper-gold polymetallic ore deposit element anomaly characteristics ore prospecting and prediction Ejinaqi Inner Mongolia
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