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Nickel ores

Nickel ore deposits occur in the Lower Silesian region (map). These are siliceous nickel ores deposits of a saprolite (weathering) type, related to the serpentinized ultramafic rocks (peridotites) of the Paleozoic age. The exploitation of the major nickel ore deposit at Szklary in the vicinities of Ząbkowice Śląskie was phased out in 1983 as uneconomic.

Anticipated economic resources of nickel ores did not changed in 2018. Anticipated economic resources explored in B and C1 categories amount to 17.21 million tonnes of ore with a metallic nickel content of 125.0 thousand tonnes (the limiting content of Ni in the deposit is 0.8%). Anticipated sub-economic resources amount to 21.32 million tonnes of ore and 84 thousand tonnes of metallic nickel. The ore resources of Grochów deposit were classified only as anticipated sub-economic (Table 1).

Prognostic resources of the Ni-layer silicate type ores in small and separate lenses in Cenozoic serpentinite weathering-wastes in the northern, eastern and southern buffer zone of the Sowie Mts. block gneisses (Lower Silesia) are estimated for ca. 25 thousand tonnes*.

Nickel is also the accompanying metal occurring in copper ores in the Fore-Sudetic Monocline. The copper deposits yield about 69.92 thousand tonnes of nickel which is recovered in technological processes as nickel sulfides. In 2018, the processing of copper sulfide ores gave 1,732 tonnes of nickel sulfides.

Prepared by: Stanisław Z. Mikulski

*Mikulski S.Z., 2011 - Rudy niklu. In: Bilans perspektywicznych zasobów kopalin Polski wg stanu na 31 XII 2009 r. (ed. S. Wołkowicz, T. Smakowski, S. Speczik): 107-109. PIG-PIB, Warszawa.