Copper Cu with Calcite, White Pine Mine, White Pine, Ontonagon Co., Michigan
Copper Cu with Calcite and Malachite, White Pine Mine, White Pine, Ontonagon Co., Michigan
Copper Cu with Calcite, Houghton Co., Michigan
Copper Cu with Silver, White Pine Mine, White Pine, Ontonagon Co., Michigan
Copper Cu, Keweenaw Co., Michigan
Copper Cu, with Epidote and Chryscolla, Keweenaw Co., Michigan
Copper Cu, with Epidote and Chryscolla, Keweenaw Co., Michigan
Copper Cu, Keweenaw Co., Michigan
Copper Cu with Calcite and Malachite, Ojibway Mine, Ojibway, Keweenaw Co., Michigan
Copper Cu, Central X, Central, Keweenaw Co., Michigan
Copper Cu Skull, Centennial Mine, Centennial, Keweenaw Co., Michigan
Copper Cu, Central Mine, Central, Keweenaw Co., Michigan
Copper Cu, with Chrysocolla, Winona Mine, Houghton Co., Michigan
Copper Cu, Float Copper, Ripley, Houghton Co., Michigan
Copper Cu, Float Copper, Ripley, Houghton Co., Michigan
Copper Cu, Float Copper, Ripley, Houghton Co., Michigan
Copper Cu, Crystals, Keweenaw Co., Michigan
Copper Cu, Crystals, Keweenaw Co., Michigan
Copper Cu, with Epidote and Malachite, Keweenaw Co., Michigan
Copper Cu, with Epidote, Calcite and Malachite,, Keweenaw Co., Michigan
Copper Cu I Upper Peninsula of Michigan
Copper Cu II Upper Peninsula of Michigan
Copper Cu III Upper Peninsula of Michigan
Copper Cu IV Upper Peninsula of Michigan
Copper Cu crystals with Calcite, Keweenaw Co., Michigan
Copper Cu with Cuprite Cu2O Baltic Mine, Baltic, Houghton Co., Michigan
Copper Cu, with Silver Ag, Upper Peninsula of Michigan
Copper Cu, I, White Pine Mine, Ontonagon County, Michigan
Copper Cu V, Mass City, Michigan
Copper Cu in Prehnite Ca2Al(AlSi3O10)(OH)2, Caledonia Mine, Ontonagon Co., Michigan
Copper Cu, II, White Pine Mine, Ontonagon County, Michigan
Copper Cu with Calcite, Keweenaw County, Michigan
Copper Cu Ray Mine, Pinal Co., Arizona
Copper Cu
Copper Cu Crystal on Mass Copper with Malachite, Keweenaw Co., MI
Copper Cu, Central Mine Shaft 4, Central, Keweenaw Co., Michigan
Copper Cu with Silver Ag, Kearsarge Mine, Houghton Co., Michigan
Copper Cu, Keweenaw Co., Michigan
Copper Cu, with Malachite and Chrysocolla, Keweenaw Co., Michigan
Copper Cu, Float Copper, Ripley, Houghton Co., MI
Copper Cu with Silver Ag, Osceola Mine, Houghton Co., Michigan
Copper Cu with Silver Ag, Keweenaw Co., Michigan
Copper Cu with Quartz SiO2 , Negaunee, Marquette Co., Michigan
Copper Cu in Prehnite Ca2Al(AlSi3O10)(OH)2, Osceola #13 Mine, Houghton Co., Michigan
Copper Cu in Prehnite Ca2Al(AlSi3O10)(OH)2, Osceola #13 Mine, Houghton Co., Michigan
Copper Cu with Casts after Quartz, Quartz, Epidote (sealed), Caledonia Mine, Ontonagon Co., Michigan
Copper Cu in Prehnite Ca2Al(AlSi3O10)(OH)2, Phoenix Mine, Keweenaw Co., Michigan
Copper Cu, Keweenaw Co., Michigan
Copper Cu with Quartz and Epidote, Keweenaw Co., Michigan
Copper Cu, Central Mine, Keweenaw Co., Michigan
Copper Cu, Keweenaw Co., Michigan
Copper Cu with Quartz, Adularia, Copper included Quartz, and Epidote, Keweenaw Co., Michigan