Copper

Osceola Mine, Osceola No. 6, Osceola, Houghton County, Michigan  USA

Specimen size: 6.7 × 2.5 × 1.6 cm = 2.64” × 0.98” × 0.63”
Main crystal size: 3.2 × 1.6 cm = 1.26” × 0.63”