Althausite

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Althausite
Althausite-Hematite-Lizardite-704015.jpg
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)
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 [1][2][3]

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.[4][2][5]

References[edit]

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