You searched for: “psilomelanic
psilomelane, psilomelanic
1. Any mixture of black manganese oxide minerals.
2. Smooth hydrous manganese oxide compositions.
3. A common ore of manganese, a hydrated oxide, occurring in smooth black amorphous masses, or in botryoidal or stalactitic shape.
4. Etymology: Greek psilos, "bare" plus melanos, "black".
This entry is located in the following unit: psilo-, psil- + (page 1)