Chemistry:Wiklundite
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Short description: Arsenite-silicate mineral
| Wiklundite | |
|---|---|
| General | |
| Category | Silicate |
| Formula (repeating unit) | Pb 2(Mn2+,Zn) 3(Fe3+,Mn2+) 2(Mn2+,Mg) 19(As3+O 3) 2(Si,As5+O 4) 6(OH) 18Cl 6 |
| Crystal system | Trigonal |
| Crystal class | Hexagonal scalenohedral (3m) H-M symbol: (3 2/m) |
| Space group | R3c |
| Unit cell | a = 8.26, c = 126.59 [Å] (approximated) |
| Identification | |
| References | [1] |
Wiklundite is a rare[3] and complex arsenite-silicate mineral with the chemical formula Pb
2(Mn2+,Zn)
3(Fe3+,Mn2+)
2(Mn2+,Mg)
19(As3+O
3)
2(Si,As5+O
4)
6(OH)
18Cl
6. The mineral characterizes in a large c unit cell parameter.[1] It was found in Långban, Sweden - a home for many rare and exotic minerals.[4]
Relation to other minerals
Structure of wiklundite is unique.[1] A slightly chemically similar mineral, although lacking manganese and iron, is hereroite.[5]
References
- ↑ 1.0 1.1 1.2 Cooper, M.A., Hawthorne, F.C., Langhof, J., Hålenius, U., and Holtstam, D., 2015. Wiklundite, IMA 2015-057. CNMNC Newsletter No. 27, October 2015, 1227; Mineralogical Magazine 79, 1229–1236
- ↑ 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.
- ↑ "Wiklundite: Wiklundite mineral information and data". http://www.mindat.org/min-46818.html. Retrieved 2016-03-13.
- ↑ "Långban, Filipstad, Värmland, Sweden - Mindat.org". http://www.mindat.org/loc-3167.html. Retrieved 2016-03-13.
- ↑ "Hereroite: Hereroite mineral information and data". http://www.mindat.org/min-46818.html. Retrieved 2016-03-13.
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