Roger Weller, geology instructor
[email protected]
copyright
2010-R.Weller
cristobalite
crystals-1
located in a large vesicle in obsidian
3.5 miles from Mono Lake, California
cristobalite
5894
Photo is copyright free only for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Specimen courtesy of Yavapai Community College
Beth Boyd