"Polianite" is a word in ENGLISH
Manganese dioxide, occurring in tetragonal crystals
nearly as hard as quartz.
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A compound of manganese dioxide with a metallic oxide; so called as though derived from the hypothetical manganous acid.
Read the complete definitionManganese dioxide, a mineral of an iron-black or dark steel-gray color and metallic luster, usually soft. Pyrolusite parts with its …
Read the complete definitionA process for the recovery or regeneration of manganese dioxide in the manufacture of chlorine, by means of milk of …
Read the complete definition