Roger Weller, geology instructor
[email protected] copyright 2010-R.Weller
copper crystals from Keweenaw Peninsula,
Michigan-1
Several of these crystals are larger than
1 centimeter.
copper
2217
Photo is copyright free for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Specimen on display at Cranbrook Institute of Science, Bloomfield Hills, Michigan.