mineral

Wavellite

Wavellite (Al3(PO4)2(OH, F)3·5H2O)

Hardness: 3.5-4 (Mohs), Color: Green, yellow, green-yellow, Luster: Vitreous to pearly, Crystal Structure: Orthorhombic (specifically radiating acicular), Cleavage: Perfect, Specific Gravity: 2.36

Hardness: 3

Identified May 31, 2026More mineral →

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Physical properties

Hardness: 3.5-4 (Mohs), Color: Green, yellow, green-yellow, Luster: Vitreous to pearly, Crystal Structure: Orthorhombic (specifically radiating acicular), Cleavage: Perfect, Specific Gravity: 2.36

Formation & geological history

A secondary mineral formed in the oxidation zones of aluminous phosphate-rich rocks, low-grade metamorphic rocks, and occasionally in hydrothermal veins. Often found in nodules or crusts.

Uses & applications

Primarily a collector's mineral due to its unique appearance; occasionally used for specialized research but too soft for most industrial or jewelry applications.

Geological facts

It was first discovered in Devon, England, in the late 18th century and named after Dr. William Wavell who brought it to the attention of mineralogists.

Field identification & locations

Identify in the field by its distinctive 'starburst' or radiating globule pattern when broken open. Common locations include Arkansas (US), Bolivia, and the UK. Check for a white or yellow matrix.