Laws of distribution of mineral grains at reduction and determination of weight of mineral samples
Abstract
Reduction by successive division into two more or less equal parts is a common operation in mineral sampling. The weight limit to which a particular material can be reduced depends on the particle size distribution, the content of the component to be determined (useful), the magnitude and degree of irregularity of the phenocrysts of that component in the host rock, the specified accuracy of reduction, and the degree of confidence in obtaining a sample with the specified accuracy. However, until recently, the mathematical dependence of the reduction weight limit on these parameters has not yet been established, although this iss. has been occupying the attention of specialists for many years. In the present work the results of experimental and theoretical researches are stated, which allowed to establish the regularity of distribution of mineral grains in the parts allocated by reduction and to find the mathematical dependence of the limiting weight of reduction (sample weight) on the main features of the sampled mineral.
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