There isn't one single chemical name for iron ore because "iron ore" is a general term for rocks and minerals that contain iron in a form that can be economically extracted.

Here are some of the most common iron ores and their chemical names:

* Hematite: Fe₂O₃ (Iron(III) oxide)

* Magnetite: Fe₃O₄ (Iron(II,III) oxide)

* Goethite: FeO(OH) (Iron(III) oxide-hydroxide)

* Siderite: FeCO₃ (Iron(II) carbonate)

* Pyrite: FeS₂ (Iron disulfide)

The specific chemical name will depend on the mineral composition of the particular iron ore being discussed.