1971 Rocks, Minerals and Fossils series, set of nine stamps. Six are minerals (well, five plus petrified wood).
Minerals Represented: Stibiotantalite, beryl, tantalite-columbite, and zircon. Missing verdelite (green tourmaline), and petrified wood.
1979 Minerals of Mozambique series, set of six stamps.
Minerals Represented: Quartz, beryl.
Missing: Magnetite, tourmaline, euxenite, and fluorite.
