Explanation & Key Takeaways: • Rajasthan is a state that is rich in minerals. • The Rajasthan state is sanctified with seventy-nine mineral varieties out of which fifty-eight minerals are commercially subjugated. • Western districts of Rajasthan namely, Jaisalmer, Barmer, Jodhpur and Bikaner minerals like Limestone, gypsum and salts are found. • Rajasthan has effective domination in the manufacturing of major minerals like Lead-Zinc, Wollastonite, Gypsum, Calcite, Ochre, Silver, Rock phosphate and other minerals like Sandstone, Serpentine, Marble, etc., that contributes around ninety percent to hundred percent of national production. Related Concepts: • Limestone: • Limestone is a sedimentary rock composed principally of calcium carbonate (calcite) or the double carbonate of calcium and magnesium (dolomite). • It is commonly composed of tiny fossils, shell fragments and other fossilized debris. • Gypsum: • It is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO_(4)·2H_(2)O. • It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard or sidewalk chalk, and drywall.