|
|
GEOLOGY
 |
1988 |
TERRES AUSTRALES
France
Kerguelen Island
Geological Map |
141a |
139 |
ROCKS
 |
1996 |
FRANCE
Unesco
National Park Uluro
Ayer Rock |
O14 |
n.c. |
MINERALOGY
 |
1989 |
LIECHTENSTEIN
Pyrite rainbow
FeS2 |
921 |
922 |
 |
1989 |
LIECHTENSTEIN
Calcite
CaCO3 |
922 |
923 |
 |
1989 |
LIECHTENSTEIN
Quartz sceptre
SiO2 |
923 |
924 |
 |
1965 |
Rhodesia
Emerald
Be3Al2Si6O18 |
103 |
107 |
 |
1984 |
OSTERREICH
Aragonite
CaCO3 |
1274 |
|
 |
1974 |
ITALIA
on the stamps
Apatite
Ca5(PO4)3
[F, OH, Cl] |
n.c. |
n.c. |
MINES - MINERS
 |
1984 |
SOUTH AFRICA
Strategic Minerals
Vanadium |
630 |
552 |
 |
1984 |
SOUTH AFRICA
Strategic Minerals
Manganese
|
631 |
553 |
 |
1984 |
SOUTH AFRICA
Strategic Minerals
Chromium |
632 |
554 |
|

|
1984 |
SOUTH AFRICA
Strategic Minerals
Titanium |
633 |
555 |
VOLCANIC LAKE
 |
1993 |
CHINA
Changbaishan crater lake |
2453 |
3175 |
Last modified: Domenica 11 dicembre 2011
|