proustite: Meaning and Definition of

proust•ite

Pronunciation: (pr'stīt), [key]
— n. Mineral.
  1. a mineral, silver arsenic sulfide, AgAsS, occurring in scarlet crystals and masses: a minor ore of silver; ruby silver.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.