Roger Weller, geology instructor
firstname.lastname@example.org copyright 2011-R.Weller
chrysocolla pseudomorphs after azurite crystals-5
Miami, Gila County, Arizona
Azurite was converted to malachite and then 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