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pyrargyrite

[pahy-rahr-juh-rahyt]

py·rar·gy·rite

[pahy-rahr-juh-rahyt]
noun
a blackish mineral, silver antimony sulfide, AgSbS3, showing, when transparent, a deep ruby-red color by transmitted light; ruby silver: an ore of silver.

Origin:
1840–50; pyr- + Greek árgyr(on) silver + -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Pyrargyrite is always a great word to know.
So is callithumpian. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a gadget; dingus; thingumbob.
Collins
World English Dictionary
pyrargyrite (paɪˈrɑːdʒɪˌraɪt)
 
n
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]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Encyclopedia Britannica
Encyclopedia

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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