Allanpringite is a phosphate mineral that was named after the Australian mineralogist, Allan Pring of the South Australian Museum.
Allanpringite is a Fe3+ analogue of the Al-phosphate mineral wavellite, 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