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psilomelane::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Type of | mineral |
Examples of psilomelane
psilomelane
Psilomelane consists of hydrous manganese oxide with variable amounts of barium and potassium.
From the en.wikipedia.org
The light steel-gray mineral and the black mineral immediately adjacent to the barite are psilomelane.
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Psilomelane, also known as black hematite, is a group name for hard black manganese oxides such as hollandite and romanechite.
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Psilomelane is amorphous and occurs as botryoidal and stalactitic masses with a smooth shining surface and submetallic lustre.
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Slab of manganese ore showing an intimate mixture of hausmannite and psilomelane in a roughly zonal arrangement and a radiating mass of white barite at the center.
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