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Tyuyamunite and Volborthite 
Back to WEEKLY MIXED MINERAL LIQUIDATION AUCTIONS - ends July 29
Ridenour Mine, Prospect Canyon Dist., Coconino Co., Arizona
- Starting Time:7/22/2010 06:30:00 PM(CDT)
- Ending Time:7/29/2010 06:30:00 PM(CDT)
Time Left:Auction Is Closed
- Size:10.6 x 7.7 X 5.4 cm
- Size Description:CABINET
Description:The sculptural, blocky sandstone matrix is richly sprinkled with cluster of tiny, sparkly, olive-green volborthite blades and a very rich and bright dusting of canary-yellow, discrete, microcrystals of the uranium oxide tyuyamunite. Volborthite is an uncommon hydrated copper vanadate secondary mineral found in the oxidized zones of vanadium-bearing hydrothermal deposits. This showy specimen is a highly representative combination piece featuring these uncommon species. Valued at $250.
