Althausite
Althausite is a relatively simple magnesium phosphate mineral with formula Mg2(PO4)(OH,F). It is very rare. Original occurrences are magnesite deposits among serpentinites. It is named after Egon Althaus (born 1933), a mineralogist at the University of Karlsruhe, Germany.[5][3][6]
| Althausite | |
|---|---|
 Dark reddish brown, subhedral crystals of althausite in a serpentine-talc matrix with dark gray subhedral hematite crystals and greenish lizardite | |
| General | |
| Category | Phosphate minerals |
| Formula (repeating unit) | Mg2(PO4)(OH,F) |
| IMA symbol | Ahs[1] |
| Strunz classification | 8.BB.25 |
| Crystal system | Orthorhombic |
| Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
| Space group | Pnma |
| Identification | |
| References | [2][3][4] |
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.
- "Mineralienatlas - Fossilienatlas".
- Mindat
- Webmineral data
- Raade G. and Tysseland M. 1975: Althausite, a new mineral from Modum, Norway. Lithos, 8, 215-219
- http://www.handbookofmineralogy.org/pdfs/althausite.pdf Handbook of Mineralogy
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