Definitions

from The Century Dictionary.

  • noun A native oxid of manganese, containing also 20 per cent. of manganese silicate.
  • noun It occurs in tetragonal crystals of a brownish-black color in Thuringia, the Harz, Piedmont, and elsewhere.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) A native oxide of manganese, of dark brownish black color. It was named from a Mr. Braun of Gotha.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy A silicate mineral containing divalent and trivalent manganese and forming grey-black tetragonal crystals.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Braun +‎ -ite after alderman Braun of Gotha, Thuringia, Germany.

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