WAVELLITE
Wavellite is a distinctive hydrous aluminum
hydroxy-phosphate mineral (Al3(PO4)2(OH)3·5H2O).
It has a nonmetallic, vitreous luster, usually a white to pale green color, a
hardness of 3.5 to 4, and usually occurs as fracture-filling or cavity-filling
circular crusts of long, radiating needles.
Wavellite (field of view 2.2 cm across) from Montgomery County, Arkansas, USA.
Wavellite (field of view 3.8 cm across) from Montgomery County, Arkansas, USA.