- Raddusa, Catania Province, Sicily, Italy
- Thumbnail, 2.2 x 2.2 x 2.0 cm
Hauerite is a rare manganese sulfide that crystallizes in the cubic system, often producing superb modified octahedrons with cube faces. This relatively large crystal exhibits a matte luster and a chocolate brown color. This is from the best of species locality (a single historic find of the mid 1800s).