The oxide minerals are compounds of metallic elements plus oxygen, with two prominent exceptions: ice and quartz. Ice (H2O) always gets left out of the mineral books. Quartz (SiO2) is treated as one of the silicate minerals. Some of them are primary minerals that solidify deep in the Earth in magmas, but the most common oxide minerals form near the surface where oxygen in the air and water acts upon other minerals such as the sulfides.
The four oxides hematite, ilmenite, magnetite and rutile are often found associated with each other.
Images 1-12 of 12
 Cassiterite |  Corundum |  Cuprite |  Goethite |
 Hematite |  Ilmenite |  Magnetite |  Psilomelane |
 Pyrolusite |  Ruby (Corundum) |  Rutile |  Spinel |
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