Allanpringite is a
phosphate mineral named after Australian mineralogist Allan Pring of the South Australian Museum. Allanpringite is a Fe
3+ analogue Al-phosphate mineral
wavellite
Wavellite is an aluminium basic phosphate mineral with formula Al3( P O4)2(O H, F)3·5 H2O. Distinct crystals are rare, and it normally occurs as translucent green radial or spherical clusters.
Discovery and occurrence
Wavellite was first d ...
, but it has a different crystal symmetry – monoclinic instead of orthorhombic in wavellite. It forms needle-like crystals, which are always twinned and form parallel bundles up to about 2 mm long. They are often found in association with other iron phosphates in abandoned iron mines.
[Kolitsch, U., Bernhardt, H.J., Lengauer, C.L., Blass, G., and Tillmanns, E., 2006. Allanpringite, Fe3(PO4)2(OH)3·5H2O, a new ferric iron phosphate from Germany, and its close relation to wavellite. European Journal of Mineralogy 18, 793-801]
References
Phosphate minerals
Monoclinic minerals
Minerals in space group 14
{{phosphate-mineral-stub