Explanation:

- Cuprite:

- It's a mineral composed of copper oxide (Cu2O).

- Not an iron ore.

- Typically mined for copper extraction.

- This is the correct answer.

- Haematite:

- It is composed of iron(III) oxide (Fe2O3).

- A major source of iron.

- Reddish-brown to black in color.

- Magnetite:

- Composed of iron(II,III) oxide (Fe3O4).

- Strongly magnetic.

- Valuable iron ore.

- Siderite:

- Composed of iron(II) carbonate (FeCO3).

- Used as an iron ore, though less common.