Sphalerite
Sphalerite
| Sphalerite | |
|---|---|
 | |
| General | |
| Category | Sulfide mineral |
| Chemical formula | (Zn,Fe)S |
| Strunz classification | 02.CB.05a |
| Dana classification | 02.08.02.01 |
| Identification | |
| Color | Brown, yellow, red, green, black. |
| Crystal habit | Euhedral Crystals - Occurs as well-formed crystals showing good external form. Granular - Generally occurs as anhedral to subhedral crystals in matrix. Colloform |
| Crystal system | Isometric hextetrahedral (Àdàkọ:Overline 3m) |
| Twinning | Simple contact twins or complex lamellar forms, twin axis [111] |
| Cleavage | [110] Perfect |
| Fracture | Uneven to conchoidal |
| Mohs scale hardness | 3.5-4 |
| Luster | Adamantine, resinous, greasy |
| Streak | brownish white, pale yellow |
| Diaphaneity | Transparent to translucent, opaque when iron-rich |
| Specific gravity | 3.9 - 4.2 |
| Optical properties | Isotropic |
| Refractive index | nα = 2.369 ZnS |
| Other characteristics | non-radioactive, non-magnetic, Fluorescent and triboluminescent. |
| References | [1][2][3] |
|
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Itokasi
àtúnṣe- ↑ http://webmineral.com/data/Sphalerite.shtml Webmineral
- ↑ http://www.mindat.org/min-3727.html Mindat.org
- ↑ http://rruff.geo.arizona.edu/doclib/hom/sphalerite.pdf Handbook of Mineralogy