Overview of the natural parameters from the geological-economic assessment of the ore deposit baltashnitsa, ore field sasa

The results of the latest research on the Pb-Zn ore deposit Baltashnitsa, 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 contents 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 Baltashnitsa, represented by this type of mineralization, was established at 4.0116% Pb. In a similar way, the cutoff grade of lead was also calculated, 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 monometal, 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. (author)