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[mass noun] A dark reddish-grey mineral consisting of a sulphide of silver and antimony.
- ‘Ore mineralization consists of free gold, electrum, and pyrargyrite.’
- ‘Pseudomorphs of marcasite, chalcopyrite, pyrite, arsenopyrite, pyrargyrite, magnetite, and quartz after pyrrhotite have been reported.’
- ‘Hurst observed pyrargyrite partly and completely enclosing polybasite crystals on tetrahedrite.’
- ‘Hurst describes the vugs as containing gold, silver, polybasite, pyrargyrite, and tetrahedrite.’
- ‘The primary ore mineral was pyrargyrite, and much of the ore ran 500-5,000 ounces of silver per ton.’
Mid 19th century: from Greek puro- (from pur fire) + arguros silver + -ite.
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