Explanation:

 The huge sandy expanse of Rajasthan is rich in the white and bright Wollastonite (used primarily in ceramics, plastics and as a paint filler), lead, zinc, calcite (basically used as a construction material), gypsum, rock phosphate (to make organic manure), silver, marble, sandstone and serpentine (green marble), dolomite, emeralds and garnets.

Large deposits of hydrocarbons have been found in Western Rajasthan and an estimated reserve of 1000 million tonnes of crude oil equivalents in Barmer. In the Jaisalmer basin region in Manohar Tiba, Tanot, Dandewala and Shahgarh 25-30 billion cubic metre natural gas reserves have been discovered. The Bikaner-Nagaur Basin also has rich heavy oil reserves.