What are the oxidation states of iron in the minerals hematite and magnetite?

  • A
    Hematite: $II, III$; Magnetite: $III$
  • B
    Hematite: $II, III$; Magnetite: $II$
  • C
    Hematite: $II$; Magnetite: $II, III$
  • D
    Hematite: $III$; Magnetite: $II, III$

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