Chemistry:Aikinite
From HandWiki
| Aikinite | |
|---|---|
 | |
| General | |
| Category | Sulfide mineral |
| Formula (repeating unit) | Pb Cu Bi S3 |
| Strunz classification | 2.HB.05a |
| Dana classification | 3.4.5.1 |
| Crystal system | Orthorhombic |
| Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
| Space group | Pnma |
| Unit cell | a = 11.297, b = 11.654 c = 4.061 [Å], Z = 4 |
| Identification | |
| Formula mass | 575.92 g/mol |
| Color | Lead gray, grayish black, reddish brown |
| Crystal habit | Acicular, massive |
| Cleavage | {010} indistinct |
| Mohs scale hardness | 2–2.5 |
| |re|er}} | Metallic |
| Streak | Grayish black |
| Diaphaneity | Opaque |
| Specific gravity | 6.1–6.8, Average = 6.44 |
| Other characteristics | Not radioactive |
| References | [1][2] |
Aikinite is a sulfide mineral of lead, copper and bismuth with formula Pb Cu Bi S3. It forms black to grey or reddish brown acicular orthorhombic crystals with a Mohs hardness of 2 to 2.5 and a specific gravity of 6.1 to 6.8. It was originally found in 1843 in the Beryozovskoye deposit, Ural Mountains. It is named after Arthur Aikin (1773–1854), an England geologist.
It has been found in Western Tasmania, in mines located near Dundas, Tasmania
References
- ↑ Aikinite. Webmineral
- ↑ Aikinite. Mindat.org
- ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.
 |  |
