Vanadinite (5) Raw Minerals Stones Rocks Collecting

Description

Origin : Morocco

Size : 479 gr - cm 12.3 x 4.7 x 7

Vanadinite 479 gr - cm 12.3 x 4.7 x 7 Raw Minerals Stones Rocks for Collection, only a piece, as in photo.

Vanadinite is a rare mineral, belonging to the group of apatitic phosphates, with the chemical formula Pb5(VO4)3Cl. It is a major industrial ore for the mining of the metal vanadium and a minor source of lead. It is a dense and brittle mineral, usually found in the form of red hexagonal crystals. It forms from the oxidation of lead ore deposits such as galena, as a result of chemical alterations of an existing material. It is therefore known as a secondary mineral. It is found in arid climates often in association with lead sulphide and galena. Other associated minerals include wulfenite, limonite and barite.
It was originally discovered in 1801 in Mexico by the Spanish mineralogist Andrés Manuel del Río. He called the mineral "brown lead" and claimed that it contained a new element, which he first called panchromium and later erythronium. However, he was later led to believe that this was not a new element but simply an impure form of chromium. In 1830, Nils Gabriel Sefström discovered a new element, which he called vanadium. It was later revealed that this was identical to the metal previously discovered by Andrés Manuel del Río. Del Río's "brown lead" was also rediscovered, in 1838 in Zimapan, Hidalgo, Mexico, and was named vanadinite due to its high vanadium content. Other names that have since been given to vanadinite are johnstonite and lead vanadate.
Deposits of vanadinite have since been unearthed in South America, Europe, Africa and North America.