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 (pī-rär′jə-rīt′, pĭ-)
A deep red to black silver ore with composition Ag3SbS3.

[German Pyrargyrit : Greek puro-, pyro- + Greek arguros, silver; see argent.]


(Minerals) 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
[C19: from German Pyrargyrit, from pyro- + Greek arguros silver]


(paɪˈrɑr dʒəˌraɪt)

a blackish mineral, silver antimony sulfide, Ag3SbS3, deep red when transparent: an ore of silver.
[1840–50; pyr- + Greek árgyr(on) silver + -ite1]
References in periodicals archive ?
The assemblage of sulfide minerals includes arsenopyrite, pyrite, pyrrhotite, sphalerite, chalcopyrite, and galena, along with minor tetrahedrite, pyrargyrite, and argentite (Figures 3(e)-3(h)).
The deposits contain the important silver ore minerals, argentite and pyrargyrite, as well as argentiferous galena and antimonial silver minerals, the latter in their deeper portions.
Similar pearceite specimens have trickled out before from the huge silver mine, but these new pieces display very brilliant rosettes, some with attachments of bright red, pinwheel-shaped aggregates of what is probably proustite (Luis's labels call it pyrargyrite, but proustite seems more likely, as the Uchucchacua orebody is arsenic-heavy, and the association here is with As-rich pearceite, not Sb-rich polybasite).
Another less important Ag mineral is pyrargyrite (called 'ruby silver' by prospectors), which was only abundant in the Silver King, Husky, Elsa and, particularly, the Lucky Queen mines.
Silver occurs in the galena, as electrum, and in tetrahedrite, argentite, and pyrargyrite. Proven and probable reserves are 4.4M mt grading 6.95 g/mt gold, 141 g/mt silver, 1.28% lead, and 1.52% zinc.
Its ore was chiefly pyrargyrite, called "rosicler" by the Spaniards.
Mineralization is known over a vertical range of 500 m and consists of sphalerite, galena, chalcopyrite, tetrahedrite-tennantite, pyrite, wolframite, and pyrargyrite in a gangue of quartz, calcite, siderite and rhodocrosite.
In the first decade of the 20th century, the Las Chispas mine near Arizpe in Sonora produced some of Mexico's largest and best specimens of polybasite crystals, large clusters of "poker chip" stephanite crystals, fine acanthite crystal clusters and a few very fine pyrargyrite specimens.
Pyrargyrite ([3Ag.sub.2.S.Sb.sub.2.S.sub.3]) and proustite ([3Ag.sub.2.S.As.sub.2.S.sub.3]) are fairly common in some deposits.
Since the turn of the century, fantastic specimens of wulfenite, calcite, amethyst, pyrargyrite, acanthite, galena, gypsum--the list goes on and on--have made their way to collections across the globe.
The principal minerals found are argentite, aguilarite, naumanite, and guanajuatite, and it has been shown that contaminants such as arsenic, selenium, and antimony decrease with depth; thus minerals such as pyrargyrite and proustite also become rarer as mining goes deeper into the Earth.