Polianite definitions

Polianite

• (n.) Manganese dioxide, occurring in tetragonal crystals nearly as hard as quartz.
Found on http://thinkexist.com/dictionary/meaning/polianite/

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Polianite

Po'li·a·nite noun [ Greek ... to become gray.] (Min.) Manganese dioxide, occurring in tetragonal crystals nearly as hard as quartz.
Found on http://www.encyclo.co.uk/webster/P/117

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Polianite

Pyrolusite
Found on http://www.translationdirectory.com/glossaries/glossary077.htm

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