The sand at Cox's Bazar beach and surrounding areas is rich in heavy-metal mineral content. The heavy minerals of Cox's Bazar beach sands are dominated by hornblende, garnet, epidote, ilmenites (both unaltered and altered) with magnetite, rutile, pyrite and some hydroxides. Cox's Bazar beach alone is believed to have a deposit of 5.119 Mt of minerals, while nearby Enani beach is expected to have another deposit of 0.729 Mt. of minerals. Surrounding islands of Maheshkhali, Kutubdia and Nijhum Deep as well as mainland beach in Teknaf area are also believed to have similar large deposits. The total deposit in these locations is about 20.5 million tons of raw sand, which contains 4.4 million tons of heavy minerals.
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