Roger Weller, geology instructor
[email protected] copyright 2010-R.Weller
silver ore-1
silver ore rich in manganese oxides
There are very few specimens
of silver ore from Tombstone, Arizona
silver
6155
Photo is copyright free
only for
non-commercial educational uses.
Credit photo to R.Weller/Cochise College.
Specimen Courtesy of
Wayne Chartier
(520) 559-5326