TFB70CD3: Arborescent and aerial growth of terminated Copper crystals, with well-defined faces and edges and deep and uniform color. The size of its crystals is important for a species that rarely gives large or sharp crystals.
This specimen, a classic for the Michigan copper belt in the USA, comes from the Moutet collection, from Marseille.
Keweenaw County, Michigan  USA

Specimen size: 6.1 × 3.3 × 1.8 cm = 2.40” × 1.30” × 0.71”

Main crystal size: 3.7 × 1.2 cm = 1.46” × 0.47”