赞比亚西北省卡森帕A矿区土壤地球化学测量及找矿效果

摘要

对赞比亚西北省卡森帕A矿区进行土壤地球化学测量，综合分析测区Cu、Co、Ni、Au、Ag、As、Pb、Zn等8个元素在土壤中分布的均匀程度、富集程度、相关关系、单元素分布特征与套合关系等，认为测区最佳找矿指示元素组合为Cu⁃Ni⁃As⁃Co⁃Zn，应用异常打分法圈定了一个Cu⁃Ni⁃As⁃Co⁃Zn综合异常Ht⁃1，经过野外地质调查，认为该异常为矿致异常；后期通过激电及高精度磁测，发现高磁、高极化、低电阻异常与化探异常吻合；经两个钻孔验证，见工业矿体，最终探获了一个中型铜多金属矿床。%Soil geochemical survey was carried out in Property A in Kasempa of Northwestern Province of Zambia, and the distribution, concentration, correlation, and fitness of single elements Cu, Co, Ni, Au, Ag, As, Pb and Zn in the surveying area were analyzed. It is considered that the best prospective guide elements are Cu⁃Ni⁃As⁃Co⁃Zn, so a composite anomaly of Cu⁃Ni⁃As⁃Co⁃Zn numbered as Ht⁃1 was delineated with weighting method, which is believed to be an anomaly related to mineralization. Later it was found that anoma⁃lies with magnetic high, high polarization and low electric resistance were consistent with the geochemical anomalies through IP survey and high⁃precision magnetic survey. Two verification holes were drilled and intersected the commercial orebody, which led to the dis⁃covery of a medium⁃size copper polymetallic deposit.