森林沼泽景观区化探找金技术方法——以黑龙江北部及内蒙古东北部为例  

Geochemical-prospecting of gold in forest or marshy landscape areas: Taking example of the northern Heilongjiang and the northeastern Inner Mongolia

作　　者：李庆录[1] 宋丙剑[1] 宋贵斌[1] 

机构地区：[1]武警黄金第三支队,黑龙江阿城150300

出　　处：《黄金地质》2001年第3期53-58,共6页Gold Geology

摘　　要：通过对黑龙江北部及内蒙古东北部森林沼泽景观区Au在水系沉积物和土壤中富集特征的研究 ,认为Au在水系沉积物中的迁移搬运距离为 80 0～ 140 0m ,主要富集在 - 4 0目的中细粒级的粉砂和淤泥中 ,一般含量为 0 6× 10 - 9～ 1 2× 10 - 9,大于 3× 10 - 9可形成异常。Au在土壤中的迁移搬运距离为 60～ 10 0m ,主要富集在 - 4 0目的B层粘土物质中 ,一般含量为 1 1× 10 - 9～ 2 0× 10 - 9,大于 6× 10 - 9可形成异常。因此该区的化探工作适合用 1∶10万水系沉积物测量工作圈定成矿有望地段 ,用 1∶5万水系沉积物或土壤测量进行查证 ,在较好地段进行 1∶2万 (2 0 0m× 4 0m)土壤测量工作 ,再于有望地段加密至 10 0m× 2 0m 。Based on the study of characteristics of Au enrichment in soil and streamsedimentary in forest and marshy landscape areas in the northern Heilongjiang and the northeastern Inner Mongolia,Its considered that the transporting distance of Au in stream sedimentary is 800～1 400 m,Au mainly enrichs in medium fine grade silt or sludge of -40 order,the content is 0 6×10 -9 ～1 2×10 -9 ,the anomaly will be formed when its over 3×10 -9 ;the transporting distance of Au in soil is 60～100 m,Au mainly enrichs in clay minerals of B layer of -40 order,the content is 1 1×10 -9 ～2 0×10 -9 ,the anomaly will be formed when its over 6×10 -9 .So,to find gold deposit in this region with geochemical prospecting,the best way is to take 1100 000 stream sediment survey to block the prospective areas,take 150 000 stream sediment or soil survey to make identification,then ,in the prospecting areas,take 120 000 (200 m×40 m～100 m×20 m) soil survey and some projects to verify.

关 键 词：金 森林沼泽景观区 化探 黑龙江 内蒙古 金矿床 

分 类 号：P618.51[天文地球—矿床学] P595[天文地球—地质学]