A big nugget of floater copper from Michigan, polished to show its super-bright luster, accented by the green oxidized zone in the center. 11.4 x 6.8 x 0.8 cm
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{{en|1=Copper
:: Locality: Keweenaw County, Michigan, USA ([http://www.mindat.org/loc-3847.html Locality at mindat.org])
:: A big