Mineral Specimen #2925 Datolite, Copper, Microcline, and Epidote
Butler lode, Caledonia Mine, Ontonagon Co., Michigan, USA
A colorful polished piece of Butler lode Copper ore. Minerals present are red Microcline, green Epidote, native Copper and clear to pink/grey colored Datolite in a modified basalt. The polished surface has a curved surface with a high polish. There are a couple of hairline cracks.