Roger Weller, geology instructor
firstname.lastname@example.org copyright 2010-R.Weller
Silver Bell Mine, Pima County, Arizona
Photo is copyright free for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College/Arizona Mining and Mineral Museum.
Specimen is on
display in the Arizona Mining and Mineral Museum,
1502 W. Washington, Phoenix, Arizona (museum closed).