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(一)概述我国许多矿床的勘探和开发中,计算储量时应用的品位指标是双指标制,即采用边界品位和工业品位两个指标,极少数采用单指标制,即边际品位。 1.边界品位。它是矿石与围岩的分界指标,在圈定矿体时,单个样品有益组分的最低含量,其作用是使圈在矿块中的贫矿和富矿混合后,能满足工业指标的要求。 2.工业品位。在矿体单个块段中,主要有用
(I) Overview In the exploration and development of many deposits in China, the grade index used in the calculation of reserves is double index system, that is, the two indexes of the border grade and the industrial grade are adopted, while the very few adopt the single index system, that is, the marginal grade. 1. The grade of the border It is the demarcation index between ores and surrounding rock. When delineating the ore body, the minimum content of beneficial components in a single sample is to enable the ring to meet the requirements of industrial indicators after the lean ore and the rich ore in the ore block are mixed. 2. Industrial grade. Mainly useful in a single block of ore body