Copper with Silver
at-auction$ 350
- Locality
- Keweenaw Peninsula, Michigan, USA
- Minerals
- Silver, Copper
- Dimensions
- 14.0 x 9.0 x 5.0 cm
- Size class
- Cabinet
- SID
- J40
Large, showy cabinet sized Michigan Copper specimen with minor Quartz and a few patches of bright native Silver. There is also a cavity with larger crystals that have a red patina. Weight is 1lb, 9.6oz, or 727 grams. Valued at $500.