黑龙江十五里桥金矿区土壤地球化学特征及找矿方向

十五里桥金矿床位于上黑龙江盆地南缘,是近年来利用土壤地球化学测量新发现的又一岩金矿床。在1∶2万土壤地球化学测量的基础上,对研究区内土壤地球化学进行了初步分析。通过区内成矿元素分布特征、相关性、因子等分析认为,区内主成矿元素为金,后期叠加富集特征明显,找寻金矿床或矿化体潜力较大;土壤测量金异常规模较大、峰值高,浓集中心明显,套合好,通过地表工程揭露发现金矿体,产于伊列克得组火山岩内,金矿化与石英脉关系密切,显示该区具有较好的找矿前景,同时根据土壤测量异常特征及所处地质环境,为找矿工作指明了方向。

Soil geochemistry characteristics and prospecting potential of Shiwuliqiao gold deposit in Heilongjiang Province

The Shiwuliqiao gold deposit is located in the southern margin of upper Heilongjiang Basin ,which was a rock gold deposit recently discovered by applying soil geochemistry survey. Based on the 1 ： 20 000 soil geochemistry survey, the author made a preliminary analysis on geochemical features in Fukeshan area. The analysis on characteris- tics, correlation and factors of elements distribution indicates that the main ore-forming element is gold, and that the characteristic of superimposed enrichment is evident in late stage. The area possesses great potentials to search gold ore deposits and orebodies. The soil survey showed that there is great scale of Au anomaly, high peak value, obvious con- centration centre and good registration. The gold oredodies occur in the Yiliekede Group volcanics according to surface engineers. The mineralization type is dominated by quartz vein. All of the factors showed great prospecting potentials. At the same time, prospecting direction is made clear according to the characteristics of soil survey anomaly and geo- logical environment.