French Southern and Antarctic Territories
Scott 194
1.00 franc
1 Jan 1994
| Mineral Name: | Cordierite |
| Composition: | Magnesium iron aluminosilicate |
| Nomenclature: | Named after Pierre Louis Antoine Cordier, the French mining engineer who first described the mineral. |
| Industrial Uses: | Scientific study. |
| Additional Notes: | Cordierite exhibits the property of pleochroism, which is a change in the color of light that is transmitted through the crystal based upon the crystal's orientation. |
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Cordierite French Southern and Antarctic Territories Scott 194 1.00 franc 1 Jan 1994 |
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| The stamp shows an illustration of a natural, unpolished specimen. | |
| http://mineralstamps.rbnet.net/cordierite.htm | Philatelic Mineralogy | Copyright © 1997-2010 by Richard Busch |