Wavellite is an aluminium basic phosphate mineral with formula Al3(PO4)2(OH, F)3·5H2O.

Distinct crystals are rare, and it normally occurs as translucent green radial or spherical clusters.

[6] Wavellite was first described in 1805 for an occurrence at High Down, Filleigh, Devon, England and named by William Babington in 1805 in honor of Dr. William Wavell (1750–1829),[4] a Devon-based physician, botanist, historian, and naturalist, who brought the mineral to the attention of fellow mineralogists.

[7][4][6][8] It occurs in association with crandallite and variscite in fractures in aluminous metamorphic rock, in hydrothermal regions and in phosphate rock deposits.

[2] It is found in a wide variety of locations notably in the Mount Ida, Arkansas area in the Ouachita Mountains.