1. pyrolusite

noun. a mineral consisting of manganese dioxide; an important source of manganese.


  • mineral
  • manganese
  • Mn

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Sentences with pyrolusite

1. Noun, singular or mass
The introduction of pyrolusite would balance the yellow tint with purple, causing the final glass product to be clear in appearance.

2. Adverb
Later chemists introduced pyrolusite into the making of glass to balance impurities.