Nickel ore deposits occur in the Lower Silesian region (map). These are deposits of nickel oxide ores formed in result of weathering of serpentinized mafic and ultramafic rocks. Exploitation of the major nickel ore deposit at Szklary in the vicinities of Ząbkowice Śląskie was phased out in 1983 as uneconomic. The remaining anticipated economic resources of that deposit were estimated at 14.64 million tonnes of ores with metallic nickel content of 117.0 thousand tonnes (limiting content of Ni in the deposit is 0.8 %). The ore resources of the Grochów deposit were classified as anticipated subeconomic.
Nickel is also one of accompanying metals in copper ores from the Fore-Sudetic Monocline. The copper deposits yield about 56.38 thousand tonnes of nickel which is recovered in technological processes as nickel sulfides. In 2013, the processing of copper sulfide ores gave 2,756 tonnes of nickel sulfides.
Prognostic resources of Ni-layer silicate type ores in small and separate lenses in serpentinite waste around the Sowie Mts. Block gneisses (Lower Silesia) are estimated for ca. 25 thousand tonnes(1).
Prepared by: Stanisław Z. Mikulski
(1) S. Z. Mikulski 2011 - "Rudy niklu" in "Bilans perspektywicznych zasobów kopalin Polski wg stanu na 31 XII 2009 r." pod red. S. Wołkowicza, T. Smakowskiego, S. Speczika. PIG-PIB Warszawa