Calcite
Photos Roger Weller, geology instructor
wellerr@cochise.edu copyright 2008-R.Weller
model of calcite
molecular structure-2
Closer view showing rhombohedral structure
The white spheres represent calcium,
the black spheres are carbon, and the red
spheres show the orientation of the oxygen atoms surrounding the carbon atoms.

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