Turkey
Scott 2115
5 lira
17 Sep 1979
| Mineral Name: | Colemanite |
| 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. |
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Colemanite Turkey Scott 2115 5 lira 17 Sep 1979 |
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| The stamp shows a natural, unpolished specimen. | |
| http://stampmin.home.att.net/colemanite.htm | Philatelic Mineralogy | Copyright © 1997-2008 by Richard Busch |