Aragonite
Photos Roger Weller, geology instructor
wellerr@cochise.edu 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
hexagonal mineral.

aragonite
hex1
Photo is copyright
free only for non-commercial educational uses.
Just credit photo to R.Weller/Cochise
College.