地球化学块体理论在吉林果松地区金资源潜力预测中的应用

Application of Geochemical Block Theory to Gold Resource Assessment in Guosong Area of Jilin Province

果松地区隶属于国家重点勘查区带:吉南-辽东成矿带、白山-老岭成矿亚带、复兴-七道沟金及多金属I级成矿远景区。基于地球化学块体理论和方法,吉林果松地区以3.0×10^(-9)为异常下限值圈出Au地球化学异常187个,总体走向为NE向或NW向,其中面积>100km^2的地球化学异常1个,介于50～100km^2的地球化学异常7个,总面积约为1 805.98km^2,异常内Au元素的平均值为1.68×10^(-9),按金成矿率0.208 8,成矿深500m计算,可供金属量为4 232 494.728kg,潜在资源量为829 546.90kg,资源量可信系数取0.6,潜在经济价值608.36亿元,找矿潜力巨大,价值可观,可作为吉林省金矿的重点勘查区域。

Guosong area is located in Fuxing-Qidaogou first level metallogenic potential region of Baishan-Laoling metallogenic sub-belt on the Jinan-Liaodong metallogenic belt.By the theories and methods of geochemical blocks,it is circled 187 geochemical abnormalities;3.0×10-9 was the lower limit value;the total area was approximately 1805.98 km 2;within the abnormal area the average of the Au element was 1.68×10-9;the gold mineralization rate was 0.2088;mineralization was in 500 meters deep;the amount of available metal was 4232494.728 kilograms;potential resources was 829546.90 kg;the amount of resources credible coefficient took 0.6;the potential economic value was 608.36 billion yuan.This region has great prospecting potential and considerable value,which can be used as the focus region of Jilin Province gold prospecting.