In the marbel industry, ore reserves refer to the produced tonnage of orthogonal prismatic, defect-free blocks of commercial sizes and of marketable aesthetical quality. On the contrary, in the mining sector, ore reserves refer to the tonnage of ore with grade above some cut-off value. While in the mining sector ore reserves are reported according to existing standard guidelines, the marble industry has no standard method. The purpose of this paper is to present a method to estimate white marble reserves using drill coring or borehole wall logging and limited joint mapping on exposed marble surfaces. Data pertaining to fracture orientation, fracture frequency, size, and whiteness were collected. The primary phase of marble characterization is followed by the discretization of the orebody into a three-dimensional array of orthogonal prismatic blocks, where the marble whiteness and fracture intensity are attribute values. Both these variables are considered to obey continuous and not discrete probability distributions. The discretization is performed using computer aided design and the Block Kriging techniques. An outline to improve the description of a given marble ore deposit at the exploration stage is presented for the prediction of marble block size distribution from joint count measurements along diamond drill cores. An example case of a white dolomitic marble quarry is used to demonstrate these methods.

中文翻译：

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白色大理石储量的估计和分类方法

在大理石行业中，矿石储量是指生产的具有商业尺寸和适销对路的美学质量的正交棱柱形、无缺陷块的生产吨位。相反，在采矿业，矿石储量是指品位高于某个临界值的矿石吨位。虽然采矿部门的矿石储量是根据现有标准指南报告的，但大理石行业没有标准方法。本文的目的是提出一种使用钻孔取芯或钻孔壁测井以及在裸露的大理石表面上进行有限接缝测绘来估算白色大理石储量的方法。收集与断裂方向、断裂频率、尺寸和白度有关的数据。大理岩表征的主要阶段之后是将矿体离散化为正交棱柱块的三维阵列，其中大理岩白度和断裂强度是属性值。这两个变量都被认为服从连续而不是离散的概率分布。离散化是使用计算机辅助设计和块克里金技术进行的。提出了在勘探阶段改进给定大理石矿床描述的概要，用于根据沿金刚石钻芯的联合计数测量预测大理石块尺寸分布。一个白色白云岩大理石采石场的示例用于演示这些方法。这两个变量都被认为服从连续而不是离散的概率分布。离散化是使用计算机辅助设计和块克里金技术进行的。提出了在勘探阶段改进给定大理石矿床描述的概要，用于根据沿金刚石钻芯的联合计数测量预测大理石块尺寸分布。一个白色白云岩大理石采石场的示例用于演示这些方法。这两个变量都被认为服从连续而不是离散的概率分布。离散化是使用计算机辅助设计和块克里金技术进行的。提出了在勘探阶段改进给定大理石矿床描述的概要，用于根据沿金刚石钻芯的联合计数测量预测大理石块尺寸分布。一个白色白云岩大理石采石场的示例用于演示这些方法。