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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.