- a mineral, silver arsenic sulfide, Ag3AsS3, occurring in scarlet crystals and masses: a minor ore of silver; ruby silver.
Origin of proustite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for proustite
I might possibly offer to change some of the locally interesting ones for a proustite, but I can't afford any more cash just now.Chats in the Book-Room
Horace N. Pym
- a red mineral consisting of silver arsenic sulphide in hexagonal crystalline form. Formula: Ag 3 AsS 3
C19: from French, named after Joseph Louis Proust (1754–1826), French chemist