Oxide containing hydroxyl
Specific gravity: 4.3 to 4.4
Colour: Brownish black to black
Solubility: Slightly soluble in hydrochloric acid; moderately soluble in sulphuric acid
Manganite is found associated with other manganese oxides in deposits formed by meteoric waters. It is often found in
epithermal (low temperature) hydrothermal veins associated with
It frequently alters to pyrolusite.
At Hartshill, Nuneaton, Warwickshire, England, UK, manganite occurs with manganoan calcite (RES p321).
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