Mineral: Staurolite
Locality: Pestsovye Keivy, Keivy Mountains, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia
Dimensions: 3.5 x 4 x 1.5 cm / main crystal: 3.1 cm

Description: Mass: 25 g MIM number:2038 N-shaped twin released from the mica matrix in which it was encased. The back of the specimen features also a similar twin. Photographer: AINU / Augustin de Valence

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