Value addition of heavy mineral sands in Sri Lanka-by M.S Roshan Akther   Source:Ft   Mining’ is defined as the extraction of valuable minerals from the earth and it is undertaken mainly by using two techniques, namely surface mining and underground mining. Surface mining is the most common type of mining (85% of all mining is surface mining), and is the only technique used for heavy mineral mining. Sri Lanka, despite being a small country, is well known for its non-metallic mineral resources. When evaluating the mineral resources of Sri Lanka, it is apparent that black sands or heavy minerals stand out as being the group that has the greatest potential to deliver globally significant production. As revealed from mineral investigations performed by the Geological Survey and Mines Bureau, Sri Lanka’s mineral resource base consists primarily of industrial minerals. Of these industrial minerals, heavy minerals (mainly ilmenite, rutile, zircon, garnet, ...

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