Definitions for pyrolusite
  • Pyrolusite (n.) - Manganese dioxide, a mineral of an iron-black or dark steel-gray color and metallic luster, usually soft. Pyrolusite parts with its oxygen at a red heat, and is extensively used in discharging the brown and green tints of glass (whence its name).
  • Pyrolusites - Sorry, we do not have a definition for this word
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