Sulvanite
| Sulvanite | |
|---|---|
 |
|
| General and classification | |
| chemical formula | Cu 3 VS 4 |
|
Mineral class (and possibly department) |
Sulfides and sulfosalts |
|
System no. to Strunz and to Dana |
2.CB.70 ( 8th edition : II / C.10) 02/03/03/01 |
| Crystallographic Data | |
| Crystal system | cubic |
| Crystal class ; symbol | cubic-hexakistrahedral; 4 3 m |
| Space group | P 4 3 m (No. 215) |
| Lattice parameters | a = 5.37 Å |
| Formula units | Z = 1 |
| Physical Properties | |
| Mohs hardness | 3.5 |
| Density (g / cm 3 ) | 3.68 to 4.0 |
| Cleavage | Well |
| colour | bronze-gold |
| Line color | black |
| transparency | opaque |
| shine | metallic |
Sulvanite is a rarely occurring mineral from the mineral class of sulfides and sulfosalts . It crystallizes in the cubic crystal system with the chemical composition Cu 3 VS 4 and forms up to 2.5 centimeters large, cubic crystals of gold-bronze color.
Etymology and history
The mineral was first found in 1900 by George A. Goyder in the Edelweiss Mine near Burra in South Australia ( Australia ). It was named after its composition of the chemical elements sulfur and vanadium .
classification
In the Strunz system , sulvanite is counted among the metal sulfides with a ratio of metal to sulfur, selenium or tellurium of 1: 1. After the 8th edition, it forms a group together with colusite , germanite , maikainite , morozeviczite , germanocolusite , ovamboite , polkovicit , renierite , stibiocolusite , nekrasovite and vinciennite . In the 9th edition , it forms a separate subgroup of sulfides with zinc , iron , copper or silver .
In the Dana systematics , it forms a subgroup of sulfides and sulfosalts with arsenosulvanite with the composition (A + ) i (A 2+ ) j [B y C z ] (A: metals, B: semi-metals, C. non-metals) and the Ratio of z / y = 4.
Crystal structure
Sulvanite crystallizes in the cubic crystal system in the space group P 4 3 m (space group no. 215) with the lattice parameter a = 5.37 Å and one formula unit per unit cell .
Education and Locations
Sulvanite forms hydrothermally as the primary sulphide in vanadium-containing copper deposits. Depending on where it was found, it is associated with chalcopyrite , chalcosine , diginite , covelline , chrysocolla , malachite , azurite , atacamite , vésigniéite , mottramite and gypsum or yushkinite , sphalerite and fluorite .
36 sites of the rare mineral are currently known (as of November 2010). In addition to the type locality , sulvanite was found in Dörrmorsbach in Bavaria , the Argentine province of Córdoba , Panagjurischte in Bulgaria , on the Kechika River in British Columbia ( Canada ), the Chinese provinces of Guizhou , Hunan and Sichuan , Kambove in Katanga , Democratic Republic of the Congo , Corte in Corsica , the Cycladic island of Tinos , Tuscany ( Italy ), Kosaka in Japan , Kentau in Kazakhstan , Kuilyu in Kyrgyzstan , Tsumeb in Namibia , Pai-Choi Mountains and Sacha in Russia , Bor in Serbia and the US state of Utah .
See also
literature
- GA Goyder: Sulvanite, a new mineral . In: Journal of the Chemical Society, Transactions . tape 77 , 1900, pp. 1094-1096 ( rruff.info [PDF; 125 kB ; accessed on May 11, 2018]).
- GA Goyder: Sulvanite, a new mineral . In: Proceedings of the Chemical Society . tape 16 , no. 217-230 , 1901, pp. 164 ( available online at archive.org - Internet Archive [accessed May 11, 2018]).
- Sulvanite . In: John W. Anthony, Richard A. Bideaux, Kenneth W. Bladh, Monte C. Nichols (Eds.): Handbook of Mineralogy, Mineralogical Society of America . 2001 ( handbookofmineralogy.org [PDF; 62 kB ; accessed on May 11, 2018]).
Web links
- Mineral Atlas: Sulvanite
- Sulvanite at mindat.org (English)
- RRUFF Database-of-Raman-spectroscopy - Sulvanite (English)
Individual evidence
- ↑ a b c d e Hugo Strunz , Ernest H. Nickel : Strunz Mineralogical Tables. Chemical-structural Mineral Classification System . 9th edition. E. Schweizerbart'sche Verlagbuchhandlung (Nägele and Obermiller), Stuttgart 2001, ISBN 3-510-65188-X , p. 84 .
- ↑ Find location list for sulvanite at the Mineralienatlas and at Mindat