Mineral: Cosalite with Muscovite and Fluorite
Locality: Kara-Oba, Betpak-Dala (Bet-Pak-Dala) Desert, Karaganda Region, Kazakhstan
Dimensions: 5 x 4 x 3 cm / main crystal: 3.3 cm

Description: Mass: 49 g MIM number:1887 Sheaves of silvery acicular crystals on a matrix made of fluorite and muscovite. The species is generally found in massive specimens, well-formed crystals as on this one being rare. Photographer: AINU / Augustin de Valence

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