Stannite
From Infogalactic: the planetary knowledge core
Stannite | |
---|---|
![]() Stannite Fabulosa Mine, Larecaja Province, La Paz Department, Bolivia- 2 mm crystals
|
|
General | |
Category | Sulfide mineral |
Formula (repeating unit) |
Cu2FeSnS4 |
Strunz classification | 02.CB.15a |
Crystal symmetry | Tetragonal 4 2m |
Unit cell | a = 5.4432 Å, c = 10.7299 Å; Z=2 |
Identification | |
Color | Steel-gray to iron-black, may tarnish blue |
Crystal habit | Rarely as pseudo-octahedral crystals also massive, granular, and disseminated |
Crystal system | Tetragonal - Scalenohedral H-M Symbol (42m) Space Group: 42m |
Twinning | Penetration twins on {102} |
Cleavage | Indistinct on {110} and {001} |
Fracture | Uneven |
Mohs scale hardness | 4 |
Luster | Metallic |
Streak | Black |
Diaphaneity | Opaque |
Specific gravity | 4.3 - 4.5 |
References | [1][2][3] |
Stannite is a mineral, a sulfide of copper, iron, and tin. The chemical formula Cu2FeSnS4. Zinc commonly occurs with the iron and trace germanium may be present.[3] Stannite is used as an ore of tin, consisting of approximately 28% tin, 13% iron, 30% copper, 30% sulfur by mass. It is found in tin-bearing, hydrothermal vein deposits occurring with chalcopyrite, sphalerite, tetrahedrite, arsenopyrite, pyrite, cassiterite, and wolframite.[1] Also known as bell metal ore.
The name comes from the Latin for tin: stannum. It was first described in 1797 for an occurrence in Wheal Rock, St. Agnes, Cornwall, England.[3]
See also
References
- ↑ 1.0 1.1 http://rruff.geo.arizona.edu/doclib/hom/stannite.pdf Handbook of Mineralogy
- ↑ http://webmineral.com/data/Stannite.shtml Webmineral data
- ↑ 3.0 3.1 3.2 http://www.mindat.org/min-3747.html Mindat.org
<templatestyles src="Asbox/styles.css"></templatestyles>