Which of the following minerals does not contain iron? — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

Step 1: Determine the formulas of the minerals: Magnetite is Fe3O4; Haematite is Fe2O3; Limonite is a hydrated iron(III) oxide-hydroxide mixture (FeO(OH)·nH2O). Step 2: Magnesite is a magnesium carbonate mineral with the chemical formula MgCO3. Step 3: Since Magnesite contains Magnesium and Carbonate but no Iron, it is the mineral that does not contain iron, corresponding to option (b).