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Althausite

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Althausite
Dark reddish brown, subhedral crystals of althausite in a serpentine-talc matrix with dark gray subhedral hematite crystals and greenish lizardite
General
CategoryPhosphate minerals
Formula
(repeating unit)
Mg2(PO4)(OH,F)
IMA symbolAhs[1]
Strunz classification8.BB.25
Crystal systemOrthorhombic
Crystal classDipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)
Space groupPnma
Identification
References[2][3][4]

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]

References

[edit]
  1. ^ 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.
  2. ^ "Mineralienatlas - Fossilienatlas".
  3. ^ a b Mindat
  4. ^ Webmineral data
  5. ^ Raade G. and Tysseland M. 1975: Althausite, a new mineral from Modum, Norway. Lithos, 8, 215-219
  6. ^ http://www.handbookofmineralogy.org/pdfs/althausite.pdf Handbook of Mineralogy