黔东南天锦黎地区矿田级金矿定位预测——兼论勘查及研究程度较低地区的矿产预测方法

黔东南天柱-锦屏-黎平地区金矿勘查及研究程度较低，在进行矿产预测时必须有针对性地进行成矿地质背景、成矿规律、物化遥信息、找矿标志、预测要素等专题研究，更多关注成矿地质背景、成矿规律对矿产预测的主导作用，找准影响矿产预测的主要因素，客观适度地赋予物化遥信息对矿产预测的权重。同时，在条件不成熟时可将预测精度降至矿田-矿床级的定位预测，从整体上评价每个金矿田的找矿远景，并对某些部位找到矿床的可能性作进一步评述。采用了多种预测要素权重的简单相加法进行定位预测，而未具体开展基于GIS的定量预测，意在强调地质勘查及研究程度较低地区开展各项专题研究的重要性，并探讨简化矿产预测程序的可行性。经尝试，适宜于该类地区矿田级定位预测的简化流程为：a.相关专题研究；b.预测要素研究及赋值；c.各矿田成矿概率的计算及找矿远景分类；d.各矿田资源潜力评价。通过该方法尝试，该区获得找矿远景区A类4个、B类3个、C类3个。

Location Prediction of Gold Deposits for Ore Field Grade in the Tianzhu-Jinping-Liping Area, Southeastern Guizhou, China:The Method on Potential Assessment of Mineral Resources of Low-Exploration & Study Degree Area

Gold deposits are of low-exploration and study degree in the Tianzhu-Jinping-Liping area, southeastern Guizhou Province. To carry out mineral prediction of gold mineral resources in this area, some special topic studies should be concerned such as the geological background, metallogenic regularity, geophysical, geochemical and remote sensing, prospecting indicators, etc. Some main factors affecting mineral prediction, for example, the geological background and metallogenic regularity must be identified. When the prediction conditions are not ripe in these areas, the potential assessment of mineral resources in ore field or deposit scale can be carried out, the prospecting perspective of each gold field can be evaluated and the possibility to find new deposit can be analyzed. The authors use the sum of weight of various forecasting elements to locate predicted mineral resources, instead of carrying out quantitative prediction based on GIS, intended to emphasize the importance of special topic researcher, and to explore the possibility of simplifying the process of mineral prediction. The simplified process of the location prediction for ore fields that suitable for this area includes studying on related topics and prediction elements, calculating the probability of mineral occurrence, classifying exploration prospective area and potential assessment of mineral resources for ore fields. According to this method，ten prospecting areas are determined including four class A,three class B and three class C.