Fontarnauite
| Fontarnauite | |
|---|---|
|
Fontarnauite, Anatolia, West Turkey | |
| General | |
| Category | borate minerals |
| Formula (repeating unit) | (Na,K)2(Sr,Ca)(SO4)[B5O8(OH)]·2H2O |
| Strunz classification | 6.DA.60 |
| Crystal system | Monoclinic |
| Crystal class |
Prismatic (2/m) H-M symbol: (2/m) |
| Space group |
Monoclinic Space group: P21/c |
| Identification | |
| Color | light, light brown |
| Cleavage | perfect {010} |
| Mohs scale hardness | 2.5 - 3 |
| References | [1][2] |
Fontarnauite is a relatively recently described, rare borate mineral with the formula (Na,K)2(Sr,Ca)(SO4)[B5O8(OH)]·2H2O. It is found in an evaporate boron deposit. It coexists with other evaporate boron minerals, especially probertite. It is monoclinic, crystallizing in the space group P21/c.[3][1]
It was named in honour of Ramon Fontarnau i Griera, a materials scientist of the University of Barcelona.[1]
References
- 1 2 3 Mindat, http://www.mindat.org/min-40279.html
- ↑ Mineralienatlas
- ↑ García-Veigas, J., Rosell, L., Alcobé, X., Subias, I., Ortí, F., Gündoğan, İ., and Helvaci, C., 2010. Fontarnauite, a New Sulphate-Borate Mineral from the Emet Borate District (Turkey). Revista de la Sociedad Española de Mineralogía 13, 97-98
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