| Rosenbergite | |
|---|---|
 Acicular rosenbergite crystals from Le Cetine Mine, Siena, Tuscany, Italy | |
| General | |
| Category | Mineral |
| Formula (repeating unit) | AlF3·3H2O |
| IMA symbol | Ros[1] |
| Crystal system | Tetragonal |
| Crystal class | 4 |
| Space group | P4/n (no. 85) |
| Identification | |
| Mohs scale hardness | 3–3.5 |
Rosenbergite is a mineral with the chemical formula AlF3·3H2O. It is a trihydrate of aluminium fluoride.
It is colorless. Its crystals are tetragonal to dipyramidal. It is named after Philip E. Rosenberg, a United States geochemist. It is found in the Celtine Mine in Tuscany, Italy and Mount Erebus, Ross Island, Antarctica. It is not radioactive. Rosenbergite is rated 3–3.5 on the Mohs Scale.
References
- ↑ 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. S2CID 235729616.
External links
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