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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
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of proustite1

1825–35; named after J. L. Proust; -ite 1
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Word History and Origins

Origin of proustite1

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

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.

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ProustianProust, Marcel

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