Gypsum
Photos Roger Weller, geology instructor
wellerr@cochise.edu
copyright
2011-R.Weller
pseudomorph of manganese oxide after
selenite crystal
Selenite has been completely dissolved away.

gypsum
037b
Photo is copyright free only for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Specimen from the Cochise College
collection
cochise037