Which of the following minerals does not contain iron ?

Options

A. Magnetite
B. Magnesite
C. Haematite
D. Limonite

Answer

To determine which of the given minerals does not contain iron, we will analyze each option one by one.

### Step 1: Analyze Magnetite
- **Magnetite** is an iron ore with the chemical formula **Fe3O4**.
- Since it contains iron (Fe), it cannot be the correct answer.

### Step 2: Analyze Magnesite
- **Magnesite** is a mineral that is primarily composed of magnesium carbonate, with the chemical formula **MgCO3**.
- Importantly, it does not contain iron. This suggests that Magnesite could be the correct answer.

### Step 3: Analyze Hematite
- **Hematite** is another iron ore with the chemical formula **Fe2O3**.
- Since it contains iron, it cannot be the correct answer.

### Step 4: Analyze Limonite
- **Limonite** is a mineral that is often considered an iron ore, with the formula **Fe2O3·3H2O**.
- As it also contains iron, it cannot be the correct answer.

### Conclusion
After analyzing all the options, we find that the mineral that does not contain iron is **Magnesite** (Option 2).

### Final Answer
The mineral that does not contain iron is **Magnesite**.

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