| Geology
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Geology @ Capital
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Oxides
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Corundum
Al4O3
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Hematite
Fe2O3
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Ice
H2O |
Magnetite (Spinel group)
Fe3O4
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Chromite (Spinel group)
FeCr2O4
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Limonite (Hydroxide)
A mixture of hydrated iron oxides
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Physical Geology
