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Manganite

Manganite – Mn³⁺O(OH)

Elements: Manganese, Oxygen, Hydrogen

Class: Oxides

Crystal System: Orthorhombic

Hardness: 4

Fluorite

Talc (1)Diamond (10)

Softer than glass. A steel knife scratches it.

Origin: Caland Pit, Atikokan, Hutchinson Township, Ontario – Canada