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滑石矿床的地质勘探,常以试样的滑石含量作为圈定矿体和计算储量的依据。如何测定并计算试样的滑石含量,由于不同矿区矿床的地质成因、围岩及伴生矿物各异,因此很难找出一种通用的分析方法。目前国内大多通过粗略手选来求取滑石含量;对于仅含碳酸盐矿物的矿床,以测定酸不溶物来计算;对于含石英和碳酸盐的矿床,用测定酸不溶物中的镁来计算;面对于那些含透闪石、绿泥石等伴生矿物的矿床,则尚无资料和方法可循。桓仁滑石矿床,属滑石—碳酸岩型,矿体内含透闪石。该矿床在勘探中,对部分难以手选的试样,要求测定滑石含量,用来圈定矿体和计算储量。针对该矿区矿床的具体情况,我们开展了化学物相法的实验研究,并将工作结果用于生产。实践证明,此法满足了地质工作要求。为此撰写本文,期望对类似矿床的取样实验工作有所助益。
The geological prospecting of talc deposits often uses the talc content of the sample as the basis for delineating the ore body and calculating the reserves. How to determine and calculate the talc content of the sample is difficult to find a common analytical method because of the geological origin, the surrounding rock and the associated minerals in different ore deposits. At present, the content of talcum is mostly determined by rough hand selection; for mineral deposits containing only carbonate minerals, the acid insoluble matter is measured; for quartz and carbonate-bearing deposits, the magnesium in the acid-insoluble material Calculation; In the face of those containing tremolite, chlorite and other associated mineral deposits, there is no information and methods to follow. Huanren talc deposit, is a talc - carbonate type, containing tremolite ore body. During the exploration of the deposit, part of the sample difficult to hand-selected, requiring the determination of talc content, used to delineate the ore body and calculate reserves. According to the specific conditions of the ore deposits in the area, we conducted an experimental study on the phase method of chemical substances and used the results of the work for production. Practice has proved that this method to meet the geological requirements. For this purpose, this article is written, expecting to be helpful to the sampling experiments of similar deposits.