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  • ColtanWikipedia

    Coltan (short for columbitetantalite and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum are extracted. The niobium-dominant mineral in coltan is columbite (after niobium's

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  • Outline of miningWikipedia

    The following outline is provided as an overview of and topical guide to mining: Mining extraction of valuable minerals or other geological materials from the earth, usually (but not always) from an ore body, vein or (coal) seam. Any

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  • Countries Compared by Geography > Natural resources

    In Pakistan u have forget to mention one of the biggest Gold Reserve located in Reko Diq , Baluchistan , Pakistan . Pakistan has gold mines in Baluchistan Province and in Thar desert , Sindh . Poor Quality coal but these reserves

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