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nagyagite

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nagyagite

[′nag·yə‚jīt]
(mineralogy)
Pb5 Au(Te,Sb)4S5-8A lead-gray mineral consisting of a sulfide of lead, gold, tellurium, and antimony. Also known as black tellurium; tellurium glance.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive
Nagyagite coated by altaite is reported to form zones around sylvanite crystals (Stumpfl, 1970, Eckel, 1997).
Famous mineral localities: the Cripple Creek mining district Colorado
And do not neglect to ogle the Jeff Scovil photograph of Dave Bunk's amazing 3.5-cm crystal group of the rare gold/lead/antimony sulfo-telluride nagyagite from Sacaramb (formerly Nagyag), Romania.
Gold: The Noble Mineral
Next, Ross showed me a phenomenal specimen of nagyagite from the type locality at Nagyag (now called Sacaramb), Romania.
Springfield show 2003
Among the array was a large Kongsberg silver curling around in a hook shape, a fine and rare nagyagite, a similarly rare hessite, crystalline gold and a fine bournonite from England.
1989
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