nagyagite


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Related to nagyagite: Calaverite

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.
References in periodicals archive ?
Nagyagite coated by altaite is reported to form zones around sylvanite crystals (Stumpfl, 1970, Eckel, 1997).
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.
Next, Ross showed me a phenomenal specimen of nagyagite from the type locality at Nagyag (now called Sacaramb), Romania.
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.