Roger Weller, geology instructor
firstname.lastname@example.org copyright 2010-R.Weller
hexagonal pseudomorph after aragonite-1
This apparently hexagonal plate originally started out as a complex twinning of
aragonite crystals, but has since been converted to calcite. The re-entrant angles
on some of the hexagonal sides show that the original crystal was really not a
Photo is copyright free only for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.