Franckeite var. Potosiite - exceptionally well-crystalized (Ref: 7.AE-193)
San Jose Mine, Oruro, Oruro Department, Bolivia
79mm x 41mm x 38mm
minID: 1JQ-JKX
Franckeite has always been an incredibly rare mineral and was only known in micro crystals until the major find in 2004 of what was then called Potosiite. This is now known to be a variety of Franckeite with less tin than usual. This was not a large find but the better specimens were quickly gobbled up by collectors and are almost never available now. This piece was one of those major specimens, it is from a collection we are liquidating for the owner and retains the original Kosnar label. In incredible condition for this delicate mineral with individual crystals that reach over 1 CM, in clusters and free standing masses. This piece also has crystals of the original Franckeite that is not the Potosiite variety so this brings two of the world's rarest Sulfosalts on a single matrix. For the species, this is also an esthetic piece, with very three dimensional form and a good metallic luster. From: Well-Arranged Molecules
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See Also
Franckeite
San Jose Mine, Oruro City, Cercado Prov., Oruro Dept., Bolivia
$2500
50mm x 30mm x 30mm
From: The Arkenstone
Franckeite / (classic material)
San Jose Mine, Oruro City, Cercado Province, Oruro Department, Bolivia
$1163
78mm x 56mm x 48mm
From: Mineral Classics
Franckeite
Itos Mine, Oruro, Cercado Prov., Oruro, Bolivia
$1500
20mm x 20mm x 10mm
From: The Arkenstone
Andorite on Zinkenite
San Jose Mine, Oruro City, Cercado Province, Oruro Department, Bolivia
$2512
66mm x 46mm x 32mm
From: Mineral Classics
Andorite with Zinkenite
San Jose Mine, Oruro City, Cercado Province, Oruro Department, Bolivia
$2559
65mm x 57mm x 23mm
From: Mineral Classics
Zinkenite
San José Mine, Oruro, Cercado Prov., Oruro, Bolivia
$2250
60mm x 50mm x 30mm
From: The Arkenstone
Franckeite Ex Richard A. Kosnar
San José Mine | Oruro | Cercado Province | Oruro | Bolivia
$1016 *
82mm x 45mm x 23mm
From: Wendel Minerals
Valentinite, Pyrite
San Jose Mine, Oruro City, Cercado Province, Oruro Department, Bolivia
$1800
30mm x 20mm x 10mm
From: The Arkenstone
Andorite
San Jose Mine, Oruro City, Cercado Province, Oruro Department, Bolivia
$3024
57mm x 51mm x 33mm
From: Mineral Classics
Ferberite (twinned)
Tazna Mine, Cerro Tazna, Nor Chichas Province, Potosi, Bolivia
$2400
60mm x 50mm x 50mm
From: The Arkenstone
Wulfenite
San Juan Poniente Shaft, Ojuela Mine, Mapimi, Durango, Mexico
$2400
120mm x 80mm x 50mm
From: The Arkenstone
Cumengeite
Amelia Mine, Santa Rosalia, Baja Sur, Mexico
$2400
40mm x 30mm x 20mm
From: Marin Minerals
Morganite with Lepidolite
Stewart Mine, Tourmaline Queen Mountain, Pala, San Diego Co., California, USA
$2400
40mm x 30mm x 30mm
From: The Arkenstone
Hemimorphite
Potosí Mine, West Camp, Santa Eulalia Mining Dist., Aquiles Serdán Mun., Chihuahua, Mexico
$2400
60mm x 40mm x 10mm
From: The Arkenstone