Question

The most common ore of iron is ______.

Options

• calamine

• haematite

Answer 1

The most common ore of iron is haematite.

Explanation:

Haematite is an iron oxide mineral with the chemical formula Fe₂O₃, and it serves as the primary and most commercially important ore for iron extraction globally. Metallurgists favour it because of its high iron content (around 70%) and widespread abundance. In contrast, calamine (ZnCO₃) is a carbonate mineral that serves as a common ore for extracting zinc, not iron.