Calculation of variation and ore-bearing coefficients in the Plavica epithermal polymetallic deposit, Eastern Macedonia

Serafimovski, Todor and Zlatkov, Goce and Tasev, Goran (2015) Calculation of variation and ore-bearing coefficients in the Plavica epithermal polymetallic deposit, Eastern Macedonia. 15th International Multidisciplinary Scientific Geoconference SGEM 2015, III. pp. 119-127. ISSN 1314-2704

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Abstract

Latest calculations of the ore-bearing coefficient in the Plavica deposit for gold and copper displayed values of 0.441 for gold and 0719 for copper, which means that within the deposit only 55.9% and 28.2%, respectively, of mass is not mineralized somehow. The calculated value of variation coefficient (V) has shown value of 271 for the gold and 130 for copper, which displays that this ore body belongs to the group of deposits with extremely uneven mineralization. An average gold and copper concentrations were determined as 0.336% Cu and 0.85g/t Au. Minimal economic content (MEC) within the Plavica deposit, was determined as 0.217 g/t Au and 0.264% Cu. In similar manner was calculated the lowest copper boundary (cutoff grade), which have shown value of 0.156% Cu and thus allowing certain decrease of contents in exploited ore. Also, there was calculated so called copper monometal value, which included influence of the present gold in the ore and it was set at relatively fair 0.371% Cu that represents solid mainstay for exploitation of copper in these low percentage ores.

Item Type: Article
Subjects: Natural sciences > Earth and related environmental sciences
Divisions: Faculty of Natural and Technical Sciences
Depositing User: Goran Tasev
Date Deposited: 12 Aug 2015 12:41
Last Modified: 12 Aug 2015 12:41
URI: http://eprints.ugd.edu.mk/id/eprint/13661

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