赣南淘锡坑钨矿的石英中子活化分析研究

Neutron Activation Analysis Study on Quartz from the Taoxikeng Tungsten Deposit in Southern Jiangxi,China

对赣南淘锡坑矿区V11号王牌矿脉不同中段的石英进行了中子活化分析,发现W主要与Sm、Lu、Yb、Mn、Sc、Ta、Fe等元素相关性比较好。在矿体的纵投影面上,识别出156中段和106中段各有3个浓集中心,并有从地表往深部W含量逐渐升高的趋势,显示矿液由南东往北西富集。预测枫林坑深部找矿前景较好。尝试性地进行了矿脉深部储量的预测研究,获得了106m和56m两个中段的储量共10275.6t,加上156中段—356中段,合计V11号脉体的储量为19851.93t,与探明储量接近。可见,利用石英中子活化分析资料,有助于矿体深部储量的估算。

In this article, quartz from different levels of the No. 11 ore vein of the Taoxikeng tungsten deposit in Gannan （southern Jiangxi province） has been analyized by neutron activation analysis. The result indicates that W has a close correlation with elements such as Sm, Lu, Yb, Mn, Sc, Ta and Fe. On the longitudinal projection plane, three concentrated centers can be distinguished at the levels of 156m and 106m respectively, and the W content has a rising trend from the surface to the deep which indicates the enrichment of the ore solution from southeast to northwest. This can suggest the promising prospecting in the deep of the Fenglingkeng deposit. Through the study on forecasting the deep reserves of the ore vein, it shows the reserves at the levels of 106m and 56m are 10275.6t, and the total reserves of No. 11 ore vein can reach 19851. 93t if plus that at the levels from 156m to 356 m. This reserves is quite close to the proved reserves. Therefore, the data from neutron activation analysis can be helpful to the estimation on the deep reserves of the ore vein.