proustite

[proo-stahyt]

noun Mineralogy.

a mineral, silver arsenic sulfide, Ag3AsS3, occurring in scarlet crystals and masses: a minor ore of silver; ruby silver.

Origin of proustite

1825–35; named after J. L. Proust; see -ite¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for proustite

Historical Examples of 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

British Dictionary definitions for proustite

proustite

noun

a red mineral consisting of silver arsenic sulphide in hexagonal crystalline form. Formula: Ag 3 AsS 3

Word Origin for proustite

C19: from French, named after Joseph Louis Proust (1754–1826), French chemist

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