矿体统计分析预测在粤西河台金矿的应用  

Geostatistical Analysis and Prediction of Orebodies:A Case Study from the Hetai Gold Orefield,Western Guangdong Province

作　　者：朱江建[1,2] 曾乔松[1] 龚贵伦[1,2,3] 易金[1,2] 林舸[1] 陈广浩[4] 

机构地区：[1]中国科学院广州地球化学研究所中国科学院矿物学与成矿学重点实验室,广东广州510640 [2]中国科学院研究生院,北京100049 [3]中国人民武装警察部队黄金第十一支队,湖南宁乡410600 [4]中国科学院南海海洋研究所,广东广州510301

出　　处：《地质与勘探》2012年第2期259-267,共9页Geology and Exploration

基　　金：国家自然科学基金项目:广东河台金矿富矿包中金的超常富集机制研究(41172082);国家基础研究计划(973):华南大面积低温成矿系统形成的构造及流体作用(2007CB411402);中国科学院广州地球化学研究所创新项目(A15-030513)联合资助

摘　　要：矿体统计分析预测以空间上有一定分布规律的找矿信息为研究对象,通过对其进行结合地质实际的统计分析,并将统计分析的结果合理地应用于已知矿体向未知矿体的找矿预测。预测的区域是地质上可靠、统计学上发生概率高的有利区域。其预测思路可分为:(1)研究并发现有一定规律的找矿信息;(2)结合地质成矿过程的统计分析;(3)结合地质实际的高概率预测。本文以粤西河台金矿为例,论述了矿体统计分析预测的的思路与方法。由矿体统计分析预测获得的预测区域与钻孔的见矿位置一致,说明其预测是有效的。该方法可能对矿体在空间分布上有一定规律的矿床都有一定的预测意义。最后,总结了矿体统计分析预测的优点、不足、注意事项及应用前景。The geostatistical analysis and prediction of orebodies （GAPO） method studies ore-search information with regularities of spatial distribu- tion. Such statistics and analysis are based on actual geological data, of which the result is tested by known orebodies and applied to prediction of new ore- bodies. The predicted region is considered to be reliable in geological settings, and to possess high probability of mineralization in a statistic sense. The process of prediction can be summed up as follows： （1） study and find prospecting information of regularities; （2） do statistical analysis combined with geological information ; and （ 3 ） predict orebodies with high probability. This paper takes the Hetai gold orefield as an example to illustrate the prediction process of the GAPO. The result shows that the predicted regions by the GAPO method are consistent with orebodies revealed by drill holes, indicating its significance for prediction of orebodies. This method can be applied to the further exploration work of the Hctai gold orefield. In addition, this paper sum- marizes the advantages, deficiencies, notices and application prospect of the GAPO.

关 键 词：矿体统计分析预测 河台金矿 找矿 思路 方法 

分 类 号：P618[天文地球—矿床学]