Stamp: Calc-alkaline granite (Algeria 1999)
Calc-alkaline granite (Algeria 1999)
06 June (Algeria ) within release Science> Geology goes into circulation Stamp Calc-alkaline granite face value 20 Algerian dinar
| Stamp Calc-alkaline granite in catalogues | |
|---|---|
| Michel: | Mi:DZ 1250 |
| Yvert et Tellier: | Yt:DZ 1201 |
Stamp is vertical format.
Also in the issue Science> Geology:
- Stamp - Gneiss - Eye face value 5;
- Stamp - Calc-alkaline granite face value 20;
- Stamp - Sericite schist face value 24;
Stamp Calc-alkaline granite it reflects the thematic directions:
In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form
