RRB Group D Minerals & Resources

OF MINERALS 1. Natural occurrence — formed by natural processes, not manufactured 2. Inorganic — made of non-living matter 3. Definite composition — specific chemical formula (e.g., iron oxide for iron ore) 4.

Crystalline structure — atoms arranged in a regular, repeating pattern 5. Solid state — exists as solid under normal conditions 6. Extractable — can be mined and used economically CLASSIFICATION OF MINERALS IN INDIA Metallic minerals: Iron ore, copper, bauxite, manganese, nickel, chromite — found in Odisha, Chhattisgarh, Jharkhand Non-metallic minerals: Limestone, gypsum, mica, asbestos, diamond — found in various states Energy minerals: Coal and petroleum — major energy sources

SSC CGL questions typically ask: • Major mineral producing states in India • Uses of specific minerals • Which mineral is found in which state (matching type) • Percentage of India's mineral reserves globally • Properties that define a mineral SHORTCUT/TRICK Remember "IONIC" for mineral properties: Inorganic, Natural occurrence, Ions/crystal structure, Orderly arrangement, Composition (fixed), Extractable. Use this acronym to quickly verify if something is a mineral.