Quartz Photos
Cochise College               
Photos of Minerals
Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu    copyright 2011-R.Weller

citrine geode from Brazil-5
At the 2010 Tucson Gem and Mineral Shows
Citrine was produced by heat treating amethyst.

quartz-citrine                                                                                                                               1687a
Photo is copyright free for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.