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 |
| 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 | [1][2][3][4] |
Vulcanite is a rare copper telluride mineral. The mineral has a metallic luster, and is a green or bronze-yellow shade. It has a hardness between 1 and 2 on the Mohs scale (between talc and gypsum). Its crystal structure is orthorhombic.
It is named after the place where it was discovered in 1961, the Mammoth Good Hope Mine in Vulcan (ghost town and district), Gunnison County, Colorado, US.[3] Small deposits have also been discovered in Japan, Russia, Saudi Arabia, and Norway. It occurs with native tellurium, rickardite, petzite and sylvanite.
References
- ↑ http://rruff.geo.arizona.edu/doclib/hom/vulcanite.pdf Handbook of Mineralogy
- ↑ http://webmineral.com/data/Vulcanite.shtml Webmineral
- 1 2 http://www.mindat.org/min-4213.html Mindat
- ↑ https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Vulcanite Mineralienatlas
This article is issued from Wikipedia - version of the 10/19/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.