Iron Oxide Aluminium Oxide Galena Silicon Dioxide
Chalcedony Hematite Corundum Quartz
Hematite Uraninite Spinel Rutile
Franklinite Magnetite Chromite Cuprite
Spinel Hematite Corundum Chalcedony
Pyrolusite Brookite Corundum Rutile
Brookite Wad Chalcedony Samarskite
Quartz Wad Opal Samarskite
Spinel Uraninite Brookite Rutile