Copper ore from the Ray Mine
The University of Arizona Mineral Museum in the Flandreau Science Center and Planetarium
The University of Arizona
Tucson, AZ, USA
2018-02-20 10:33:52 AM
Canon EOS 6D, f/4 @ 60 mm, 1/50, ISO 250, No Flash
Joseph A. Carr www.JoeCarr.ca
