论文部分内容阅读
对矿床进行經济地質評价的主要依据,是视其中有用元素的含量多少而定。而有用元素含量的多少,即品位的高低是否真实地反映了矿床的实际情况,主要是取决于取样方法的合理性。合理的采样方法应该是根据不同矿床的变化特性而进行选擇的。赣南某黑钨細脈带矿床的产状变化比较特殊。它是由单一走向的平行矿脈所组成,脈幅多在0.1～0.5公尺,与一般独立大脈鎢矿床相似,但矿脈密集,成帶状分佈(一般矿脈间距为0.3～O.7～1.2公尺),且分枝、复合、尖灭、再现现象较为普遍,因此不能完全套用一般独立大脈矿床的工作经验。我們在工作初期,由于对这种矿床的儲量計算方法認識不足,因此在采样方法的选择上也走了一些弯路。后經苏联专家的指示,逐步得到了改进。但对这种方法的合理性,
The main basis for the economic geological evaluation of the deposit depends on the content of useful elements. The amount of useful elements, that is, the level of the grade truly reflects the actual situation of the deposit, mainly depends on the sampling method is reasonable. Reasonable sampling methods should be based on the characteristics of different deposits to choose. The occurrence of some black tungsten vein belt deposits in southern Jiangxi shows special changes. It consists of a single parallel vein with a pulse width of 0.1-0.5 m. It is similar to the general independent vein tungsten deposit, but the vein is dense and has a banded distribution (general vein spacing is 0.3-0.0 mm). 7 to 1.2 meters), and branching, compounding, pinch out, reproduction phenomenon is more common, it can not fully apply the general independence of vein pulse of the work experience. At the beginning of our work, due to lack of understanding of the method for calculating the reserves of such deposits, we also took some detours in the selection of sampling methods. After the instructions of Soviet experts, and gradually improved. However, the rationality of this method,