Wavellite. Collected by John Rice, August, 1987, from Montgomery County, Arkansas. Mineral collection of Bringham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 9-3038a, Al3(PO4)2(OH,F)3·5H2O. United States Geological Survey
|Wavellite from Poland
||Green to yellowish-green and yellow, brown, white and colorless
||spherical, radial aggregates; striated prisms; crusty to stalactitic
||Orthorhombic - Dipyramidal
|| Perfect,  Good
|Mohs Scale hardness
||3.5 - 4
||Vitreous to resinous, pearly.
||nα = 1.518 - 1.535 nβ = 1.524 - 1.543 nγ = 1.544 - 1.561
||δ = 0.026
||2.3 - 2.4
Wavellite is a phosphate mineral, normally translucent green. It is found in fractures in aluminous metamorphic rock, in hydrothermal regions and in phosphate rock deposits.
Named after William Wavell (?-1829) of England who discovered the mineral in a quarry in Devon, England in 1805. It is found in a wide variety of locations notably in the Mount Ida, Arkansas area in the Ouachita Mountains.
Hydrated aluminium phosphate has the chemical formula:
* List of minerals
- ^ http://rruff.geo.arizona.edu/doclib/hom/wavellite.pdf Mineral Handbook
- ^ http://webmineral.com/data/Wavellite.shtml Webmineral
- ^ http://www.mindat.org/min-4250.html Mindat
List of minerals