Gypsum
Photos Cochise College
Photos of Minerals
Virtual Geology Museum Hall of Minerals
Gypsum
Photos Roger Weller, geology instructor
wellerr@cochise.edu copyright 2008-R.Weller
gypsum, variety selenite-swallowtail twin
crystal-1
Naica, Chihuahua, Mexico
gypsum
Photo is copyright free for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Specimen courtesy of Collin Mineral Company, Inc.
3215 East Redwood Lane, Phoenix, AZ 85048-7835
(480) 759-1976
gpeters@cox.net