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Spinel-twinned Copper (old classic) Sal Avella Coll. 
Back to SPECIAL TUCSON INVENTORY LIQUIDATION AUCTIONS - Feb 9, 2012
Champion Mine, Houghton Co., Michigan
- Starting Time:1/30/2012 06:45:00 PM(CST)
- Ending Time:2/9/2012 06:30:40 PM(CST)
Time Left:Auction Is Closed
- Size:3.4 x 1.8 x 1.0 cm
- Size Description:Miniature
Description:A classic and striking copper miniature from the famous Champion Mine of Michigan's famed Copper Country. Fabulous, dentritic groupings of spinel-twinned copper crystals spring outward on three sides from a multiple long "backbones" of spinel-twinned copper. The crystals have a beautiful variable patina. This form of copper crystals was classified as Type I branching by Dana in 1886. The historic Champion Mine operated from 1902 to 1967and this is probably an old-timer, as it is very high quality. The Champion is renowned for spinel-twins like this and this is a good one. This cutie looks great from all sides! Ex Sal Avella Copper Collection. this particular habit is quite rare and distinctive to this one mine.
