黑龙江省砂金的成色特征  

CHARACTERISTICS OF THE FINENESS OF PLACER GOLD IN HEILONGJIANG PROVINCE

作　　者：蔡尚波[1] 吴尚全[1] 王春宏[1] 李秀梅[1] 

机构地区：[1]武警黄金地质研究所

出　　处：《黄金地质》1997年第2期1-6,共6页Gold Geology

摘　　要：对黑龙江省８４个砂金样品的成色进行了测定，并与７个岩金样品对比，结果表明，砂金成色变化较大，与原生岩金来源有明显继承性关系，由于受后生风化作用影响，砂金普遍具有金壳结构。砂金成色与其粒度及在河谷中产出位置呈规律性变化，由成色计算出来的溶蚀系数，可作为指导寻找原生金矿的依据之一。The fineness of 84 placer gold samples in Heilongjiang was determined and compared with those of 7 rock gold samples.The result showed the fineness of placer gold changed much and had an obvious inheritance of the source of the primary rock gold.Because of the later weathering,placer gold had shell structure commonly.The change among the fineness,the size and the occurence in the valley of placer gold are regular.The coefficient solution calculated according to the fineness can be used as one of the predicters to find primary gold deposit.

关 键 词：砂金 成色 原生金源 金矿床 找矿 

分 类 号：P578.11[天文地球—矿物学] P618.510.8[天文地球—地质学]