Ecuador
1960 – C361 C360 - C364 |
|
1997 - 1441 1441-1445 |
1997 - 1442 |

|
|
|
|
Pyrite, Chalcopyrite |
|
Quartz SiO2 |
Chalcopyrite CuFeS2 |
|
1997 - 1443 |
1997 - 1444 |
1997 - 1445 |
|
 |
|
 |
|
Gold Au |
Silicified wood |
Pyrite FeS2 |
England - Great Britain
1977 – 809 806-809 |
 |
Mineral Structure Halite |
España
1982 - Cind |

|
Various ninerals I Exposition Filatelica energetico - minera Madrid |
1982 - Cind |

|
Various ninerals I Exposition Filatelica energetico - minera Madrid |
1994 – 2763a 2763 a-d |
1994 – 2763b |
1994 – 2763c |
1994 – 2763d |
 |
 |
|

|
Cinnabar HgS |
Sphalerite (Zn,Fe)S |
Pyrite FeS2 |
Galena PbS |
1995 – 2805a 2805 a-c |
1995 – 2805c |
1996 - 2843 2843-2844 |
|
|
 |
 |
|
Aragonite CaCO3 |
Dolomite MgCa(CO3)2 |
Fluorite CaF2 |
|
2014 - n.c. - Multi Y&T - 4559-4566 |
2014 - n.c. - Multi Y&T - 4564 |

|
 |
Collectibles Minerals |
Quartz SiO2 |
2020 - n.c. Y&T - 5149 |

|
Jet Mineraloid |
2022 - n.c. Y&T - n.c. |

|
Pyrite FeS2 |
Ethiopia
2003 – 1647 1647-1650 |
2003 – 1648 |
2003 – 1649 |
2003 – 1650 |
 |
 |
|
|
White Opal SiO2·nH2O |
Brown Precious Opal SiO2·nH2O |
Fire Opal SiO2·nH2O |
Yellow Precious Opal SiO2·nH2O |
2007 – 1715 1715 - 1718 |
2007 – 1716 |
2007 – 1717 |
2007 – 1718 |
|
 |

|

|
Gypsum CaSO4·2H2O |
Quartz SiO2 |
Rock Ambo Sandstone |
Feldspar KAlSi3O8 |
2023 - Property of Grubessi Odino