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Model of lithology and discontinuities of marble quarry from core drilling

Baier Natalia-Vasiliki

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Summary

Decorative stones are the main production performance in almost all active marble quarrying deposits. The positive quality & characteristics (color, physicochemical properties) is a signifi-cant advantage of the export activities in each country. In the exploitation of marble deposits there are some factors that determine the marble reserves. These factors are decorative stone market price and demand, Recovery ratio (RR), Stripping ratio (SR), topography, the surface, geometrical characteristics, environmental and social criteria.Marble exploitation is determined by the extractability of the marble blocks and their quality characteristics. Core drillings and the drilling’s samples are used to determine the extent and continuity of the marble deposit. The tectonics of the deposit and the mapping of the rock dis-continuities are crucial to be researched. The aim of the research is a mathematical lithological model and discontinuities of a marble deposit. The method determines the marble reserves from the marble resources and estimates the distribution of the marbles. The data analysis is derived from the marble drillings in Oxiro Dramas. The coloring characteristics whiteness (Wht %) and marble discontinuities (FF m-1) are the data of the characterization. The mathematical model, geostatistical analysis, and the determination of the volumetric model through Block Kriging techniques was performed. Fi-nally, the percentage of retrievability of marble reserves and the evaluation of the distribution are determined through the design of the final form of exploitation which was constructed un-der constraints.

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