锑矿地球化学定量预测在贵州榕江—雷山地区的示范

THE DEMONSTRATION OF ANTIMONY ORE GEOCHEMICAL QUANTITATIVE PROGNOSIS IN RONGJIANG-LEISHAN AREA OF GUIZHOU PROVINCE

在全国矿产资源潜力预测评价项目的基础上,以区域化探资料二次开发为前提,通过总结已知典型锑矿床的成矿成晕地质、地球化学特征,在贵州榕江—雷山地区,对不同地质单元(盖层和基底)开展锑矿的地球化学定量预测示范工作。以相似度、成矿地质条件、矿床点分布特征、元素组合特征、Sb异常强度为预测变量,对榕江—雷山地区锑矿进行了预测靶区的圈定,从地球化学角度,通过类比法、面金属量法对圈定预测靶区的资源量进行估算,为矿产资源潜力预测评价提供地球化学预测资料。

On the basis of the project of ＂China National Mineral Resources Potential Evaluation＂ and with the secondary development of regional geochemical data as a precondition, the authors generalized the halation and metallization geochemical and geological char- acteristics of some typical antimony deposits within the study area. In Rongjiang-Leishan area of Guizhou Province, the authors conduc- ted geochemical quantitative prognosis of some antimony deposits in different geological units （the cap and the base formation）. Simi- larity, metallization conditions, deposits distribution, elements composition and antimony anomaly intensity were selected as the prog- nostic variables, and some target areas around Rongjiang-Leishan were delineated. Furthermore, the potential resource of each target area was evaluated individually on the basis of analogy and areal productivity methods. The results provide geochemical data as refer- ence for mineral potential evaluation.