Tangeite, also known as calciovolborthite, is a calcium, copper vanadate mineral with formula: CaCu(VO₄)(OH). It occurs as a secondary mineral that can be found in sandstone and also in the oxidized zones of

vanadium Vanadium is a chemical element with the symbol V and atomic number 23. It is a hard, silvery-grey, malleable transition metal. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer ( pas ...

bearing deposits. It was named in 1925 by Aleksandr Evgenievich Fersman for its discovery locality in the Tange Gorge,

Ferghana Valley The Fergana Valley (; ; ) in Central Asia lies mainly in eastern Uzbekistan, but also extends into southern Kyrgyzstan and northern Tajikistan. Divided into three republics of the former Soviet Union, the valley is ethnically diverse and in the ...

Alai Mountains The Alay or Alai Range ( ky, Алай тоо кыркасы; russian: Алайский хребет) is a mountain range that extends from the Tien Shan mountain range in Kyrgyzstan west into Tajikistan. It is part of the Pamir-Alay mountain syste ...

, Kyrgyzstan.

References

Vanadate minerals Copper(II) minerals Orthorhombic minerals Minerals in space group 19 Minerals described in 1925 {{mineral-stub