Staurolite — Yinnietharra, WA

Staurolite from Yinnietharra Station in the Upper Gascoyne, Western Australia. Staurolite is an iron aluminium silicate that grows in metamorphosed, clay-rich rocks such as schist. Its name comes from the Greek stauros, a cross, after its well-known cross-shaped twin crystals.

65 × 40 mm, 160 g