Halite
PhotosRoger Weller, geology instructor
wellerr@cochise.edu copyright 2008-R.Weller
halite-blue salt
If salt (the mineral halite) forms
with an excess of sodium atoms, it will develop a
blue color. If the salt
is crushed it loses the blue coloration.

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