Plavnoite
Plavnoite is a very rare complex uranium sulfate mineral with the formula K0.8Mn0.6[(UO2)2O2(SO4)]•3.5H2O. Typically for the secondary uranium mineral, plavnoite contains uranyl groups. It was discovered in the Plavno mine in Jáchymov, Czech Republic.[1][2] The Jáchymov site is known as a type locality for many rare and unique minerals.[3]
| Plavnoite | |
|---|---|
| General | |
| Category | Sulfate |
| Formula (repeating unit) | K0.8Mn0.6[(UO2)2O2(SO4)]•3.5H2O |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | C2/m |
| Unit cell | a = 8.63, b = 14.28, c = 8.86 [Å], β = 104.04° (approximated) |
| Identification | |
| Other characteristics |  |
| References | [1] |
Relation to other minerals
Although related to zippeite,[1] plavnoite is chemically unique.[4]
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References
- Plášil, J., Škácha, P., Škoda, R., Kampf, A.R., Sejkora, J., Čejka, J., Hloušek, J., Kasatkin, A.V., Pavlíček, R., and Babka, K., 2015. Plavnoite, IMA 2015-059. CNMNC Newsletter No. 27, October 2015, 1229; Mineralogical Magazine 79, 1229–1236
- "Plavnoite: Plavnoite mineral information and data". Mindat.org. Retrieved 2016-03-13.
- "Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic - Mindat.org". Mindat.org. Retrieved 2016-03-13.
- "Plavnoite: Plavnoite mineral information and data". Mindat.org. Retrieved 2016-03-13.
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