a rare, semihard, orthorhombic mineral, hydrous aluminum phosphate, Al(PO)(OH)·5HO, characterized by a radiating, globular structure
See wavellite in American Heritage Dictionary 4
(wāˈvə-lītˌ)
noun
A colorless to greenish yellow or black mineral, Al3(PO4)2(OH)3·5H2O, having finely acicular, radiating crystals and sometimes mined for the extraction of phosphorous.