31 October (Angola ) within release Geology, mineralogy, paleontology goes into circulation Stamp Ferrometeorite face value 1 Angolan escudo
Stamp Ferrometeorite in catalogues | |
---|---|
Michel: | Mi:AO 564 |
Stamp Number: | Sn:AO 552 |
Yvert et Tellier: | Yt:AO 561 |
Stamp is square format.
Also in the issue Geology, mineralogy, paleontology:
Stamp Ferrometeorite 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