Comoro Islands
Scott 930i
375 francs
1998
The mineral name is misspelled as "Indigolite" on the stamp.
| Mineral Name: | Indicolite (a variety of elbaite tourmaline) |
| Composition: | Sodium lithium aluminum boro-silicate hydroxide |
| Nomenclature: | Named after the mineral's color. |
| Industrial Uses: | Gemstones. |
| Additional Notes: | Also known as indigolite. Indicolite is the blue variety of elbaite, which is a member of the tourmaline family of minerals. |
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Indicolite (Tourmaline) Comoro Islands Scott 930i 375 francs 1998 |
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The stamp shows a natural, unpolished specimen. The mineral name is misspelled as "Indigolite" on the stamp. |
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| http://mineralstamps.rbnet.net/indicolite.htm | Philatelic Mineralogy | Copyright © 1997-2010 by Richard Busch |