Minerals and stones

Mali 2014 Famous Geologists, Minerals and Rocks - W. Smith

Niger 2013 Mi.2257-0+Bl.192 25€ Earth minerals, Diamond, Gold

Rhodesia 1971 Geological Congress and Minerals

Zaire (Congo) 1996 €34 Minerals and ores of Africa, wanted series

Botswana 1984 22€ Mining and Industry, Diamonds and Minerals

Central African Republic 2011 Mi.3112-4+Bl.736 23€ Mineralogy and minerals

Central African Republic 2011 Mi.2958-1+Bl.704 20€ Minerals, Hematite, Gold

Central African Republic 2013 €26 Minerals and ores of Africa

Central African Republic 2011 Mi.2958-1+Bl.704 19.5€ African minerals, Gold

Niger 2014 Mi.3264-7+Bl.397 25€ Minerals, Agate, Amethyst

Niger 2015 Mi.3590-2+Bl.465 €27 Minerals, wulfenite, auricalcite

Niger 2015 Mi.3390-3+Bl.422 25€ Minerals and ores, muscovite, peridot

Niger 2015 Mi.3852-5+Bl.475 27€ Minerals and gems, ruby, malachite

Niger 2014 Mi.3002-5+Bl.344 €25 Minerals and volcanoes, volcanoes

Niger 2016 Mi.4412-5+Bl.587 €26 Minerals and artefacts, jasper and jadeite

Niger 2016 Mi.4472-5+Bl.599 26€ Minerals and volcanoes of the world, volcanoes

Central African Republic 2014 €26 Minerals and ores, Lapis Lazuli

Central African Republic 2015 26€ Minerals and ores, Sphalerite, Pyrite

Central African Republic 2014 30€ Minerals and ores, Azurite, Malachite

Saint Thomas 2015 Mi.6300-3+Bl.1113 22€ Minerals and mining, ores

Central African Republic 2015 €26 Minerals and volcanoes, Volcanoes, Emerald

Saint Thomas 2014 Mi.5780-3+Bl.1012 20€ Minerals and ores

South West Africa 1981 Salt processing, Mining