党河南山金地球化学场研究

地层中金的高丰度及出现金矿床（点）是表征“高大”金地球化学场存在的主要标志，强烈的地表水的冲刷作用与干旱蒸发环境相结合，在相对发育中基性火山岩的党河南山一带形成了既高又大的金地球化学场，变异系数是识别高值区岩金成矿有利程度的敏感指标，金元素的强烈的分异作用与区域地质作用有关，粘土化蚀变在不同的尺度下均具有找矿指示意义， K、Al、Sn是金成矿的重要指示元素，K、Al、Sn、Au、As、Sb六元素的二态值累加等值线图指示黑刺沟一带的成矿远景优于扎子沟一带，说明定量地球化学变量的定性组合在矿床（田）的定位预测中具有重要意义。

On the gold geochemical field in the Danghenanshan mountains

The high and enormous gold geochemical field in the Danghenanshan mountains is originated from both strata aboundant of gold element and known gold deposits, resulting from the incorpporation of the intense eroding of the water in the earth surface and the envioronment with aridity , The variance coefficient of gold element is a sensitive indication for recongnition of available level of metalizatioin of rock-gold built in the high gold content area , and the intensive differentiation is related to regional geological proccess. The alteratioin of clay is of significance of ore-serveying in different scale ; K, Al, and Sn are important indicative elements; and the contour map derived from the sum of binary values of K, Al, Sn, Au, As, and Sb gives more objective prospective areas than others, i. e. the prospective for gold deposits in Hecigou area is more noticeable than in Zazigou area.