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