The impurities present in a mineral are called — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

# Solution: Impurities in Minerals **Step 1: Define the term** When minerals are extracted from the earth, they contain unwanted substances along with the desired mineral compound. **Step 2: Identify the correct terminology** The unwanted materials or impurities present in a mineral ore are called **gangue** (or **matrix**). **Step 3: Distinguish related concepts** - **Gangue**: Non-valuable mineral impurities associated with ore - **Flux**: Substance added during smelting to remove gangue - **Slag**: Product formed when gangue combines with flux **Step 4: Real-world example** In iron ore extraction, iron oxide ($Fe_2O_3$) is the valuable mineral, while silica ($SiO_2$) and other rocky materials constitute the gangue. **Conclusion:** The impurities naturally present in a mineral/ore deposit are called **gangue**. This is the standard metallurgical terminology used in extraction and purification processes.