Bixbyite
Bixbyite is a manganese oxide mineral with the chemical formula Mn2O3. It crystallizes in the cubic system and is commonly found as reddish-brown isometric crystals or granular masses. Bixbyite is notable for adopting the bixbyite structure, a cubic arrangement shared by several sesquioxides such as In2O3.
Geologically, bixbyite forms as an oxidation product in manganese-rich ore deposits and in hydrothermal veins. It
The mineral is named after the town of Bixby, Oklahoma, United States, where the type locality is
In terms of properties, bixbyite is opaque with a vitreous to resinous luster and a reddish-brown to