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