Copper with Tenorite and Calcite

Kearsarge Mine, Kearsarge, Houghton County, Michigan  USA

Specimen size: 11.2 × 8.7 × 4.4 cm = 4.41” × 3.43” × 1.73”
Main crystal size: 2.5 × 1.8 cm = 0.98” × 0.71”