青海省都兰县果洛龙洼金矿的发现——化探找矿实例  

Discovery of Guoluolongwa gold deposit in Dulan county,Qinghai province-A case history of geochemical exploration

作　　者：刘孝忠[1] 刘继顺[1] 潘彤 

机构地区：[1]中南大学,湖南长沙410083 [2]青海省有色地质矿产勘查局,青海西宁810007

出　　处：《矿产与地质》2006年第4期484-488,共5页Mineral Resources and Geology

摘　　要：在干旱高山景观区,以4点/km2的采样密度,选择-20^+120目粒级段为初加工粒级,开展1∶5万水系沉积物地球化学测量。以1∶2.5万沟系土壤测量对1∶5万水系沉积物异常进行检查,可达到快速、经济、准确圈定矿化范围的目的。研究结果证明,在干旱高山景观区化探是行之有效的找矿方法。In the high mountain area under arid climate, stream sediment geochemical survey at the 1/50000 scale was carried out with the sampling density of 4 points per square kilometer. The grain size of the sample in initial preparation stage was-20-＋120 mesh. Then, the anomaly of stream sediment survey was checked by the drainage soil survey at a scale of 1 to 25000. It is quick, economical and precise for outlining the spatial distribution of mineralization and the geochemical exploration method is effective in the aridity--high mountain area.

关 键 词：地球化学测量 找矿有效性 干旱高山景观区 金矿 果洛龙洼 青海 

分 类 号：P622.3[天文地球—地质矿产勘探]