Roger Weller, geology instructor
[email protected] copyright 2010-R.Weller
fluorite-purple-3
El Filo mine, Mapimi district, Mexico
fluorite
douglass27
Photo is copyright free only for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Mineral specimen courtesy of
Douglass Minerals
Dave and Liz Douglass
10985 N. Poinsettia Drive, Tucson, Arizona 85737
(520) 742-0294
[email protected]