Mineral Stamps from Zambia

Mineral Stamps from Zambia

1982: Minerals. A set of ten stamps. Minerals Represented: Chalcopyrite, and tourmaline. Missing azurite, banded ironstone, bornite, cobaltocalcite, malachite, uranium…

Mineral Stamps from Uganda

Mineral Stamps from Uganda

1998: Minerals. A set of eight stamps. Minerals Represented: Emerald. Missing columbite-tantalite, galena, malachite, cassiterite, ferberite, monazite, and microcline.