Volborthite
Sofronovskii Cu Mine, Kalinino, Kungursky District, Perm Krai, Russia
This is a rare copper-vanadium oxide and represents one of just a handful of mineral species that contain the element vanadium as a primary constituent. Neon green, highly lustrous, crystals of volborthite, to .6 cm across, are nestled in a vug in the matrix. Named in 1837 after Alexander von Volborth (1800-1876), russian paleontologist. This is ...
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