Vulcanite

This article is about the mineral vulcanite. For vulcanized rubber, see ebonite. For artificial stone, see artificial stone.

Vulcanite

General
Category| Telluride mineral
Formula
(repeating unit)| CuTe
IMA symbol| Vul[1]
Strunz classification| 2.CB.75
Crystal system| Orthorhombic
Crystal class| Dipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)
Space group| Pmnm
Identification
Color| Pale to yellow bronze
Crystal habit| Massive, granular, tabular
Twinning| Common
Cleavage| [hk0] Good, [h0l] Indistinct
Fracture| Sectile - Curved shavings or scrapings produced by a knife blade
Mohs scale hardness| 1 - 2
Luster| Metallic
Diaphaneity| Opaque
Specific gravity| 7.1
Pleochroism| Very strong, bright yellow to blue-gray
Fusibility| 1.5
References| [2][3][4][5]

Vulcanite is a rare copper telluride mineral. The mineral has a metallic luster, and has a green or bronze-yellow tint. It has a hardness between 1 and 2 on the Mohs scale (between talc and gypsum). Its crystal structure is orthorhombic.

Vulcanite is named for the place where it was discovered in 1961, the Mammoth Good Hope Mine in Vulcan (ghost town and district), Gunnison County, Colorado.[4] Small deposits have also been discovered in Japan, Russia, Saudi Arabia, and Norway. It occurs with native tellurium, rickardite, petzite, and sylvanite.

## See also[edit]

* Telluride mineral

## References[edit]

1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
2. ^ http://rruff.geo.arizona.edu/doclib/hom/vulcanite.pdf Handbook of Mineralogy
3. ^ http://webmineral.com/data/Vulcanite.shtml Webmineral
4. ^ a b http://www.mindat.org/min-4213.html Mindat
5. ^ https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Vulcanite Mineralienatlas

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