Native vanadium

Native vanadium is the mineral form of the metal vanadium, with the accepted name "vanadium". This exceedingly rare mineral was found among fumaroles of the Colima volcano. Fumaroles of Colima are known of being vanadium-rich, depositing other vanadium minerals, that include shcherbinaite (V₂O₅) and colimaite (K₃VS₄).^{[1][2] [3]}

References

1. Ostrooumov, M., and Taran, Y., 2015. Discovery of Native Vanadium, a New Mineral from the Colima Volcano, State of Colima (Mexico). Revista de la Sociedad Española de Mineralogía 20, 109-110
2. "Vanadium: Vaandium mineral information and data". Mindat.org. Retrieved 2016-03-02.
3. "Colima volcano (Volcan de Fuego; Volcan de Colima), Colima volcanic complex, Jalisco, Mexico". Mindat.org. Retrieved 2016-03-02.