Roger Weller, geology instructor
firstname.lastname@example.org copyright 2011-R.Weller
chrysocolla pseudomorphs after gypsum crystals-2
Ray Mine, Kearny, Pinal County, Arizona
Gypsum (selenite) crystals were replaced with chrysocolla and quartz.
Photo is copyright free for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College
from the A.L. Flagg collection