Calcite
Photos Roger Weller, geology instructor
wellerr@cochise.edu copyright 2008-R.Weller
calcite-rhombohedron crystals-2
The mineral calcite crystallizes in a
great variety of forms. One of these forms is the
rhombohedron, the same
form as the calcite cleavage. The crystal faces are parallel
to the
cleavage directions.

calcite
Photo is copyright free for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Specimen from Cochise College collection
cochise095