Overview of the natural parameters from the geological-economic assessment of the ore deposit Baltašnica, ore field Sasa

Gjorgjiev, Lazar and Serafimovski, Todor and Aleksandrov, Marin and Tasev, Goran (2021) Overview of the natural parameters from the geological-economic assessment of the ore deposit Baltašnica, ore field Sasa. Geologica Macedonica, Special Issue No.5 (5). pp. 203-210.

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Abstract

The results of the latest research on the Pb-Zn ore deposit Baltašnica, were an incentive to make a calculation of some important techno-economic parameters, which would define the economic type of this mineralization. Namely, the ore-bearing degree in these types of ore mineralization is
variable, but the calculation of certain levels and of different drill holes gives a more realistic overview of the variable distribution of mineralization within the ore bodies. The calculated ore-bearing coefficient of the sum of lead and zinc is 0.42%, which means that in the boundaries of the ore bodies 58% of the mass has contents under 4.0% Pb + Zn. The calculated value of the coefficient of variation (V) for lead is 89.30% and for zinc 104.13%, values that are in the range of 85-120%, which shows that these ore bodies belong to the second group and the second subgroup of lead-zinc deposits with medium even mineralization. The average con- tents of lead, zinc, copper, and silver were determined at 2.96% Pb, 1.79% Zn, 0.089% Cu and 15.97 g/t Ag. The minimum economic content (MEC) in the ore deposit Baltašnica, represented by this type of min- eralization, was established at 4.0116% Pb. In a similar way, the cutoff grade of lead was also calcu- lated, which showed a value of 2.8879% Pb. The value of the monometal of lead was also calculated, in which the influence of the zinc and the silver presented in the ore is included. The calculated lead mono- metal, which is 5.6761%, is a solid base for a profitable exploitation of these poor lead-zinc ores. The calculated ore reserves within this ore deposit are
4.5 Mt of ore and the projected life of the mine is 15
years.

Item Type:	Article
Subjects:	Natural sciences > Earth and related environmental sciences
Divisions:	Faculty of Natural and Technical Sciences
Depositing User:	Goran Tasev
Date Deposited:	29 Oct 2021 08:58
Last Modified:	29 Oct 2021 08:58
URI:	https://eprints.ugd.edu.mk/id/eprint/28659

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