| http://www.w3.org/ns/prov#value | - Mining in Sierra Leone is characterized by known deposits of rutile (a major source of titanium), bauxite (used as an abrasive and catalyst), titanic iron ore, diamonds, gold, chromite (a major source of chromium), platinum, lignite (brown coal), clays, and base metals such as copper, nickel, molybdenum (used to strengthen and harden steel), lead and zinc.
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