The name Psilomelane was discredited as a distinct mineral variety but the name is still used as group name for hard black manganese oxides of which Romanechite and Hollandite are components. Psilomelane means smooth and black in Greek which aptly describes its appearance. It is often found in botryoidal masses with submetallic luster.
- Optical Properties
- Characteristic Physical Properties
- Chemistry & Crystallography
Countries of Origin
Sweden; United States of America (the); Belgium; Unknown; China; Russian Federation (the); Mexico; France; Germany; India