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Also known as "red antimony", kermesite is a antimony oxysulphide which is certainly an uncommon combination of elements. Beautiful and rare aptly describe kermesite and our example does not disappoint. Recently acquired from a Calgary collection, this cabinet-sized specimen of ore shows several radial crystal groups of kermesite. The metallic ruby red colour of the acicular crystals is stunning. Other species are present but I have yet to identify them. This big specimen weighs almost 4 kg
Mineral: Kermesite Locality: Nova Alexander Adit, Kolarsky Vrch, Pezinok, Slovakia Crystal System: Triclinic Mineral Class: Sulfides Provenance: Ex Steve Potvin Dimensions: 10 × 14 × 15 cm