andorite

andorite

[′an·də‚rīt]
(mineralogy)
AgPbSb3S6 A dark-gray or black orthorhombic mineral. Also known as sundtite.
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Mercury minerals are altered, cerargyrite changes and andorite tarnishes.
Mathias had set out a few "new" finds, and was especially proud of a specimen of andorite with associated zinkenite and stannite from the San Jose mine, Oruro, Bolivia.
In a similar vein (so to speak), I reported last year from Tucson on a new strike of superb specimens of andorite at the world's best locality for that species, i.
Gordon (1944) described andorite in small, brilliantly metallic, striated, prismatic steel-gray crystals to 1 mm, all covered by wavellite, with stannite and pyrite on quartz.
Flat, striated, compound andorite blades to 9 cm, metallic gray and medium-lustrous, are decorated with nests of small, brilliant black, iridescent needle crystals of zinkenite; other associated species, in microcrystals, include stannite and pyrite.
The San Jose mine officially closed in late 1991, but recent searches for more of its world-class andorite specimens have produced, instead, a few very fine examples of the rare lead-tin-iron sulfosalt franckeite, these found early in 2003 on the 380 level.
The exhibit also held rare franckeite, andorite, helvite and canfieldite specimens, all from South America.
Associated minerals are: (dominant) miargyrite; (less frequent) pyrargyrite, stannite and kesterite; (trace) andorite, diaphorite, robinsonite, galena, chalcopyrite, sphalerite and pyrite.
Associated minerals are: scainiite, zinkenite, boulangerite, robinsonite, tintinaite, sorbyite and other incompletely characterized minerals, Other associated minerals are: sphalerite, cinnabar, galena, andorite, bournonite, tetrahedrite, chalcostibite, gersdorffite, barite, cerussite and stibiconite.
franckeite, jamesonite, stannite Maria Teresa Berndtite, (*) herzenbergite, ottemannite, stannite Mariana Jamesonite Marta Zinnwaldite Matilde Cerussite, galena, siderite, sphalerite Mercedes Mafnesioriebeckite del Illampu Mesa de Plata Acanthite, andorite bromargyrite, pyrargyrute, silver, tenorite Millipaya Drive, hedleyite jamesonite, molybdenite, molybdite, monazite, pyrite, quartz, schorl, tungstite, wolframite; see Marcamacani, Hucumarini Milluni Cassiterite.
Associated minerals are: zinkenite, boulangerite, robinsonite, tintinaite, sorbyite, a new chloro-sulfosalt, sphalerite, cinnabar, galena, andorite, bournonite, tetrahedrite, chalcostibite, gersdorffite, barite, cerussite and stibiconite.
Next, consider Brian's excellent specimens of the familiar sulfosalt species from the San Jose mine, Oruro Department: unusually lustrous black franckeite in intergrown shaggy spherical aggregates to 7 cm; four fine thumbnails of andorite in thin, metallic gray dull-lustered loose aggregate s; and perhaps 50 specimens of stannite crystals in those tight little spheres we have seen before, but these overlaid heavily by unusually brilliant zinkenite needles.