Non-metallic Mineral Deposits - SlideShare
Nov 01, 2014 · Non-metallic Resources • Non-metallic resources - not mined to extract a metal or an energy source. Construction Materials • sand, gravel, limestone, and gypsum Agriculture • phosphate, nitrate and potassium compounds. Industrial uses • rock salt, sulfur Gemstones • diamonds, rubies, etc. and Business Products • glass sand ...