Smithite
| Smithite | |
|---|---|
 Red smithite with imhofite | |
| General | |
| Category | sulfosalt mineral |
| Formula (repeating unit) | AgAsS2 |
| IMA symbol | Sth[1] |
| Strunz classification | 2.GC.30 |
| Crystal system | Monoclinic |
| Identification | |
| Formula mass | 246.92 g/mol |
| Color | Pale red (changes to orange on exposure to light) |
| Crystal habit | hexagonal pyramid |
| Cleavage | Perfect, parallel to (100) |
| Mohs scalehardness | 1.5 – 2 |
| Luster | Adamantine |
| Streak | vermilion |
| Specific gravity | 4.88 |
| References | [2] |
Smithiteis asulfosalt mineralwith thechemical formulaAgAsS2.It was first described by mineralogist R H Solly in 1905, in samples from theLengenbach quarrynear Binn, Switzerland, and was named forHerbert Smith,who was an assistant in the department of mineralogy of theBritish Museum (Natural History).[3]Smithite is a dimorph oftrechmannite.
References
[edit]- ^Warr, L.N. (2021)."IMA–CNMNC approved mineral symbols".Mineralogical Magazine.85(3): 291–320.Bibcode:2021MinM...85..291W.doi:10.1180/mgm.2021.43.S2CID235729616.
- ^"Smithite".mindat.org.Retrieved2024-10-27.
- ^Solly, RH (1905)."Some new minerals from the Binnenthal, Switzerland"(PDF).Mineralogical Magazine.14(64): 72–82.Bibcode:1905MinM...14...72S.doi:10.1180/minmag.1905.014.64.03.
Wikimedia Commons has media related toSmithite.
 | This article about a specificsulfide mineralis astub.You can help Wikipedia byexpanding it. |