Altaite

hessite

tellurium

Formula: PbTe
Telluride, galena group
Specific gravity: 8.19
Hardness: 2 to 3
Streak: Black
Colour: Tin-white with a light yellow tint; yellow-brown, blue (tarnished)
Solubility: Effervesces with nitric acid (AM 34.361-362)
Environments

Hydrothermal environments

Altaite typically occurs in medium-temperature hydrothermal veins in gold-tellurium-bearing deposits (Webmin, HOM). Associated minerals include native gold, native silver, antimony, tellurium, tellurantimony, galena, pyrite, hessite, nagyágite, tetrahedrite, sylvanite, petzite, calaverite, arsenopyrite, sphalerite, chalcopyrite, jamesonite, boulangerite, bournonite, aguilarite, pyrrhotite, siderite, cerussite and quartz (HOM, Mindat).

At the Golden Mile deposit, Kalgoorlie-Boulder, Western Australia, altaite has been found with hessite, petzite, and often minor galena and bournonite (R&M 18.1.14).

At the Charley Group and Hido Group,near Taseko Lake narrows, Clinton Mining Divisions, British Columbia, Canada, altaite has been found in vuggy limonitic quartz associated with hessite, native gold and several sulphides (AM 34.361-362).

Near Glacier Lake, New Westminster Mining Division, British Columbia, Canada, altaite has been found as small nests in limonitic vein calcite (AM 34.361-362).

At the Hedley Monarch Mine, Olalla, Osoyoos Mining Division, British Columbia, Canada, altaite is associated with hessite and petzite (AM 34.361-362).

At the Dome Mine, South Porcupine, Cochrane District, Ontario, Canada, altaite occurs as scattered grains associated with pyrrhotite in quartz (AM 34.361-362).

At the Ardeen Mine, Moss Township, Thunder Bay District, Ontario, Canada, altaite has been found with hessite in a quartz - calcite gangue (AM 34.361-362).

At the Golden Gate mine, Kirkland Lake Township, Timiskaming District, Ontario, Canada, altaite has been found as a finely crystalline mass associated with calaverite and native gold coating one surface of white pyrite-bearing quartz (AM 34.361-362).

In the Kirkland Lake Area, Timiskaming District, Ontario, Canada, altaite occurs in several mines as disseminated grains or compact masses embedded in silicified rock, quartz, or altered syenite porphyry, and associated with coloradoite, petzite, calaverite, melonite, pyrite, molybdenite, chalcopyrite and native gold (AM 34.361-362).

At the Bevcon mine, Abitibi-Témiscamingue, Québec, Canada, altaite is disseminated with petzite and native gold in massive white quartz (AM 34.361-362).

At the Horne Mine, Abitibi-Témiscamingue, Québec, Canada, altaite occurs with petzite and calaverite in coarsely crystalline masses, or intergrown with tellurobismuthite (AM 34.361-362).

At the Robb-Montbray Mine, Abitibi-Témiscamingue, Québec, Canada, altaite occurs in substantial masses in solid rich masses of tellurides, sulphides, and native gold, usually intergrown with tellurobismuthite (AM 34.361-362).

At Upper Burwash Creek, Yukon terrirory, Canada, altaite has been identified associated with hessite, native gold and hedleyite (AM 34.361-362).

The type locality is the Second Zavodinskii Mine, Zyryan District, East Kazakhstan, Kazakhstan.

At Nagyág, Deva, Hunedoara, Romania, altaite has been found as irregular inclusions in coarse nagyágite with rhodochrosite (AM 34.361-362).

At the Clogau Mine, Bontddu, Gwynedd, Wales, UK, altaite has been found as inclusions in tellurobismuthite, associated with inclusions of hessite (MW).

At the Red Cloud Mine, Boulder County, Colorado, USA, altaite occurs as disseminated grains associated with pyrite and empressite in porphyry (AM 34.361-362).

At the Empress Josephine Mine, Kerber Creek district, Saguache county, Colorado, USA, altaite occurs as small inclusions in empressite (AM 34.361-362).

At Las Cruces, New Mexico, USA, altaite occurs as disseminated nests in coarsely crystalline baryte (AM 34.361-362).

Common impurities: Ag,Au,Cu,Fe,Se,S

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