Twinned Crystals Cochise College
Crystals and Crystal Models
Virtual Geology Museum Hall of Minerals
Twinned Crystals Roger Weller, geology instructor
wellerr@cochise.edu
copyright 2008-R.Weller
wooden crystal model
tetragonal twin- #82-2
common in cassiterite
Photo is copyright free for non-commercial
educational uses.
Just credit photo to R.Weller/Cochise College.