Mineral: Quartz, Ferberite (?)
Locality: Gaolingxia tunnel (construction site), Jianyang, Nanping Prefecture, Fujian Province, China
Dimensions: 5 x 3,5 cm

Description: The black crystal (7 mm) was visually determined as possible Ferberite (or a pseudomorph of Goethite after Ferberite?).

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