青海省黑刺沟地区金元素地球化学异常特征及其找矿潜力

Geochemical Characters of Gold and Prospecting Potentiality in Heicigou Area,Qinghai Province

黑刺沟地区近年来开展了多项矿产勘查工作,本次利用衬值法在该区圈定了8处1∶5万水系沉积物综合异常,其中4处是以Au为主元素、Ag-As-Sb-Bi-Pb-Sn为伴生元素的综合异常,异常峰值高达59. 62×10-9,并且在2处异常中已发现金矿成矿事实,Au最高品位达20. 3×10-6。结合本区有利的成矿地质背景,利用水系沉积物综合异常与成矿事实很好的相关性的找矿标志,通过进一步的矿产勘查工作,有望发现具有一定规模的金多金属矿。

In recent years,we have carried out a number of mineral exploration work in Heicigou Area.The work is delineated in the region through the contrast from 1∶50 000 stream sediment anomalies,including four places predominantly in Au element,As-Sb-Bi-Ag-Pb-Sn for associated elements integrated anomaly.Au often peak as high As 59.62×10^-9,and gold mineralization have been found in the two abnormal fact.Au is in the highest grade of 20.3×10^-6.Considering the favorable metallogenic geological background,we try to use the comprehensive anomalies of stream sediments and metallogenic fact that is a good correlation of ore-prospecting criteria.In our further mineral exploration work,it is expected to find gold polymetallic deposit of a certain scale.