地质填图+X荧光快速测量在三什江金矿靶区预测中的应用

Application of geological mapping +X fluorescence fast measurement in prediction of target area in three Shi Jiang gold mine

提及矿调、靶区预测等工作,其勘查面积一般均较大,大都不会低于50km2,在调查区靶区的圈定中,常存在边界难确认、勘查周期长等问题。像金矿这类低含量矿种,野外通过肉眼很难直接分辨和判断,尤其是黔南东南地区还存在地表植被发育,浮土覆盖严重,地质特征出露不全等现状,更是加大了该区金矿勘查的难度。为有效解决此类问题,笔者试着采用地质填图+X荧光快速分析组合测量方式在三什江地区进行试验,试验中发现X荧光快速分析砷(As)含量较高区域,在化学分析结果中金(Au)含量较高,金(Au)含量与砷(As)含量具有很好的正相性。利用此特征,为该区前期预测工作中省去了大量的槽探及化验工作,节约了工作成本,大大缩短了该区的工作周期,且快速、有效地完成了靶区的圈定,在预测靶区中钻探深部验证见矿效果较好,该法对今后该类矿产靶区预测及圈定具有一定的借鉴意义。

With reference to the prospecting and target area prediction,the exploration area is generally large,most of which will not be lower than 50km2.In the delineation of the target area of the investigation area,there are often problems such as difficult boundary identification and long exploration cycle.It is difficult to distinguish and judge directly from the naked eyes in the field,such as gold deposits,especially in the southeast of Qiannan,the development of the surface vegetation,the serious cover of the floating soil,the inadequacy of the geological features,and the difficulty in the exploration of the gold deposits in this area.In order to solve this problem effectively,the author tried to use the geological mapping+X fluorescence rapid analysis combined measurement method in the three river area to carry out the test.In the experiment,it was found that X fluorescence was used to quickly analyze the high content of arsenic(As),and the content of gold(Au)was higher in the chemical analysis result,and the content of gold(Au)and arsenic(As)was good.Positive phase.Using this feature,a large number of channel and laboratory tests have been omitted in the early prediction work of the area,the working cost is saved,the working cycle of the area has been shortened greatly,and the target area is quickly and effectively completed,and the depth of drilling in the prediction target area is better.The method is used to predict the target area of this kind of mineral resources in the future.And the delineation has certain reference significance.