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[pahy-rahr-juh-rahyt] /paɪˈrɑr dʒəˌraɪt/
a blackish mineral, silver antimony sulfide, AgSbS 3 , showing, when transparent, a deep ruby-red color by transmitted light; ruby silver: an ore of silver.
1840-50; pyr- + Greek árgyr(on) silver + -ite1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for pyrargyrite
  • Silver was also produced from ores including tetrahedrite, stephanite, and pyrargyrite.
British Dictionary definitions for pyrargyrite


a dark red to black mineral consisting of silver antimony sulphide in hexagonal crystalline form: occurs in silver veins and is an important ore of silver. Formula: Ag3SbS3
Word Origin
C19: from German Pyrargyrit, from pyro- + Greek arguros silver
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Encyclopedia Article for pyrargyrite

a sulfosalt mineral, a silver antimony sulfide (Ag3SbS3), that is an important source of silver, sometimes called ruby silver because of its deep red colour (see also proustite). The best crystallized specimens, of hexagonal symmetry, are from St. Andreasberg in the Harz Mountains and from Freiberg, both in Germany; and Colquechaca, Bol. It is mined at Guanajuato, Mex., and near Silver City, Idaho. It is common in small amounts in the silver mines of the western United States and is abundant at the Comstock Lode, Nevada. For detailed physical properties, see sulfosalt (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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