Mineral: Cassiterite on Muscovite
Locality: Mount Xuebaoding, Pingwu, Mianyang Prefecture, Sichuan Province, China
Dimensions: 7,0 x 4,5 x 10,5 cm

Description: Main crystal size: 4,9 cm Perfect black crystal with a square section and complex termination on the edge of a blade covered with small mica crystals on the two faces MIM number 1242 Photographer: Augustin de Valence (Aïnu)

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