Volborthite is a mineral containing copper and

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 ...

, with the

formula In science, a formula is a concise way of expressing information symbolically, as in a mathematical formula or a ''chemical formula''. The informal use of the term ''formula'' in science refers to the general construct of a relationship betwee ...

Cu₃ V₂ O₇(O H)₂·2 H₂O. Found originally in 1838 in the Urals, it was first named knaufite but was later changed to volborthite for

Alexander von Volborth Alexander von Volborth/Aleksandr Fedorovich von Volborth (born 1800, Mogilev - died 1876, Kiev), was a Russian Empire palaeontologist. Volborthite, a mineral containing copper and vanadium and first found in 1838 at the Sofronovskii Copper Mine ...

(1800–1876), a Russian paleontologist.Mineral Galleries
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Tangeite 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 bearing deposits. It w ...

(synonym: calciovolborthite), CaCuVO₄(OH), is closely related.

Occurrence

Volborthite was first described in 1837 for an occurrence in the Sofronovskii Mine, Yugovskii Zavod, Perm,

Permskaya Oblast Until 1 December 2005, Perm Oblast (russian: Пе́рмская о́бласть) was a federal subject of Russia (an oblast) in Privolzhsky (Volga) Federal District. According to the results of the referendum held in October 2004, Perm Oblast was ...

, Middle Urals, Russia. It occurs as an uncommon oxidation mineral in vanadium bearing hydrothermal copper ores. It is associated with

brochantite Brochantite is a sulfate mineral, one of a number of cupric sulfates. Its chemical formula is Cu4SO4(OH)6. Formed in arid climates or in rapidly oxidizing copper sulfide deposits, it was named by Armand Lévy for his fellow Frenchman, geologist ...

, malachite, atacamite,

tangeite 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 bearing deposits. It w ...

, chrysocolla,

baryte Baryte, barite or barytes ( or ) is a mineral consisting of barium sulfate ( Ba S O4). Baryte is generally white or colorless, and is the main source of the element barium. The ''baryte group'' consists of baryte, celestine (strontium sulfate), ...

and gypsum.

References

Copper(II) minerals Vanadate minerals Phosphate minerals Monoclinic minerals Minerals in space group 12 {{mineral-stub