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D10-13 - Volborthite - $ 300 SOLD Richardson District (Waring Creek), Grand Co., Utah small cabinet, 7.1 x 6.9 x 4.1 cm ex. Lawrence Conklin
A large, rich specimen with beautiful clusters of yellow-green volborthite, on matrix. It comes with an old museum label, though I am unsure from which institution this was.
MD-20564 - Volborthite, Chrysocolla - - Archived Copiapó Province, Atacama Region, Chile small cabinet, 8 x 5 x 2 cm
An attractive and unusually rich specimen for the locality, of bright green volborthite crystals to several mm perched on chrysocolla. for the species, these are pretty good-sized crystals and isolated at that! 8 x 5 x 2 cm
MD-233141 - Volborthite, Tyuyamunite - - Archived Ridenaur Mine (Ridenour Mine), Prospect Canyon District, Coconino Co., Arizona, USA cabinet, 15.0 x 11.2 x 6.0 cm.
15.0 x 11.2 x 6.0 cm. Volborthite is an uncommon hydrated copper vanadate secondary mineral found in the oxidized zones of vanadium-bearing hydrothermal deposits. This bright, large cabinet specimen is richly covered with tiny, sparkly, forest-green volborthite blades and canary-yellow, discrete microcrystals of the hydrated calcium uranyl vanadate tyuyamunite. This is an excellent, large combination specimen on blocky, sandstone matrix of these uncommon species.
MD-245504 - Tyuyamunite, Volborthite - - Archived Ridenaur Mine (Ridenour Mine), Prospect Canyon District, Coconino Co., Arizona, USA cabinet, 13.5 x 6.5 x 5.2 cm.
13.5 x 6.5 x 5.2 cm. This bright cabinet specimen is richly covered with canary-yellow, discrete microcrystals of the hydrated uranyl vanadate tyuyamunite. One side of the piece also has sparkly, forest-green volborthite microcrystals with tyuyamunite. Volborthite is an uncommon hydrated copper vanadate secondary mineral found in the oxidized zones of vanadium-bearing hydrothermal deposits. This is an excellent, large combination specimen on blocky, sandstone matrix of these uncommon species.
MD-263831 - Volborthite - - Archived Ridenaur Mine (Ridenour Mine), Prospect Canyon District, Coconino Co., Arizona, USA small cabinet, 5.8 x 4.5 x 4.2 cm.
5.8 x 4.5 x 4.2 cm. Volborthite is an uncommon hydrated copper vanadate secondary mineral found in the oxidized zones of vanadium-bearing hydrothermal deposits. This fine specimen features scintillating, electric lime-green volborthite plates nicely concentrated on the sculptural matrix of sandstone. Rare.
MD-65625 - Volborthite - - Archived Sofronovskii Cu Mine, Yugovskii Zavod, Perm', Permskaya Oblast', Middle Urals, Urals Region, Russia thumbnail, .6 cm
This is a rare copper-vanadium oxide and represents one of just a handful of mineral species that contain the element vanadium as a primary constituent. Neon green, highly lustrous, crystals of volborthite, to .6 cm across, are nestled in a vug in the matrix. Named in 1837 after Alexander von Volborth (1800-1876), russian paleontologist. This is one of the finest specimens I have ever seen of the mineral, which is usually just a boring microcrysatllized crust underneath better copper minerals. The crystals here are sharply formed, and well-protected all these years. I believe this to be a rather significant specimen. 4.3 x 3.2 x 3.1 cm All Content and Design ©1996-2010 The ArkenstonePowered by http://mineralwebsites.comBy-species Galleries | ||||||||||||||
