Mineral: Greenockite
Locality: Bishopton tunnel, Bishopton, Renfrewshire, Scotland / United Kingdom
Dimensions: 5.5 x 5 x 3 cm / main crystal: 0.8 cm

Description: Mass: 71 g MIM number:1945 Two yellow-orange crystals arranged upside down on a black basaltic matrix. One of the two crystals clearly shows the hemihedry which characterizes this wurtzite close species with a flat base and a pointed top. These crystals are considered large for the species. Photographer: AINU / Augustin de Valence

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