proustite

[proo-stahyt]

noun

Mineralogy.

1. a mineral, silver arsenic sulfide, Ag 3 AsS 3 , occurring in scarlet crystals and masses: a minor ore of silver; ruby silver.

proustite

/ ˈpruːstaɪt /

noun

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

Word History and Origins

Origin of proustite¹

1825–35; named after J. L. Proust; -ite ¹

Word History and Origins

Origin of proustite¹

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

Example Sentences

Changed the reference for Proustite on page 626, and the references for Pyrargyrite, for Ruby Silver, for Silver, for Silver Glance and for Silver Ores on page 627, from "109" to "108."

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Other minerals which yield a minor percentage of the total silver produced are the silver-antimony sulphides, pyrargyrite or "ruby silver," stephanite or "black silver," and polybasite; the silver-arsenic sulphides, proustite or "light ruby silver" and pearcite; and the silver antimonide, dyscrasite.

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It is found native, and also combined with sulphur, arsenic, antimony, chlorine, etc., in the minerals argentite, proustite, pyrargyrite, ceragyrite, etc.

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