Steel-gray to iron-black, commonly tarnished from bronze-yellow to sooty black; grayish white with a pale bluish tint in polished section
Crystal habit
Granular to massive
Fracture
Subconchoidal irregular
Tenacity
Slightly sectile to brittle.
Mohs scale hardness
2.5 – 3
Luster
Metallic
Streak
Grayish black
Diaphaneity
Opaque
Specific gravity
8.7 – 9.14
References
[2][3][4][5]
The mineral petzite, Ag3AuTe2, is a soft, steel-gray telluride mineral generally deposited by hydrothermal activity. It forms isometric crystals, and is usually associated with rare tellurium and gold minerals, often with silver, mercury, and copper.
The name comes from chemist W. Petz, who first analyzed the mineral from the type locality in Săcărâmb, Transylvania, Romania in 1845. It was described by Wilhelm Karl Ritter von Haidinger in 1845 and dedicated to W. Petz who had carried out the first analyses.[3][4]
It occurs with other tellurides in vein gold deposits. It is commonly associated with native gold, hessite, sylvanite, krennerite, calaverite, altaite, montbrayite, melonite,
frohbergite, tetradymite, rickardite, vulcanite and pyrite.[3]
Petzite forms together with uytenbogaardtite (Ag3AuS2) and fischesserite (Ag3AuSe2) the uytenbogaardtite group.
^ abcAnthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C. (2005). "Petzite" (PDF). Handbook of Mineralogy. Mineral Data Publishing. Retrieved 6 August 2022.
^ abBarthelmy, David (2014). "Petzite Mineral Data". Webmineral.com. Retrieved 6 August 2022.
The mineral petzite, Ag3AuTe2, is a soft, steel-gray telluride mineral generally deposited by hydrothermal activity. It forms isometric crystals, and...
Saudi Arabia, and Norway. It occurs with native tellurium, rickardite, petzite, and sylvanite. Telluride mineral Warr, L.N. (2021). "IMA–CNMNC approved...
K. Gold telluride minerals, such as calaverite and krennerite (AuTe2), petzite (Ag3AuTe2), and sylvanite (AgAuTe2), are minor ores of gold (and tellurium)...
combined with tellurium as the minerals calaverite, krennerite, nagyagite, petzite and sylvanite (see telluride minerals), and as the rare bismuthide maldonite...
gold-containing ores include various tellurides (sylvanite, nagyagite, petzite, and krennerite). Certain contaminants in ores can interfere with the extractability...
above. A little hard to identify, petzite which is hazardous could be mistaken for coloradoite, on the other hand, petzite is anisotropic as opposed to coloradoite...
such as calaverite and krennerite (two different polymorphs of AuTe2), petzite, Ag3AuTe2, and sylvanite, AgAuTe4. The town of Telluride, Colorado, was...
mineral that occurs associated with vulcanite, native tellurium, cameronite, petzite, sylvanite, berthierite, pyrite, arsenopyrite and bornite. List of minerals...
of Western Altai. Telluric silver or telluric silver-gold glance — is Petzite, a rare ore mineral close to hessite, a mixed telluride of silver and gold...
and a hardness on the Mohs scale of 2 (gypsum). It forms, together with petzite (Ag3AuTe2) and fischesserite (Ag3AuSe2) the uytenbogaardtite group. The...
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