Composition: Hydrated calcium borate hydroxide
Nomenclature: Named after William Coleman, owner of the mine in which colemanite was discovered.
Industrial Uses: Ore of boron; source of borax.
Additional Notes: Colemanite is also known as borspar. The mineral neocolemanite, once thought to be a distinct mineral species, has been shown to be colemanite.
Turkey : Scott 2115 : 5 lira : 17 Sep 1979
Colemanite