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0: Sell: Tantalite...bium and tantalum are extracted. The niobium-dominant mineral in coltan is columbite (after niobium's original American name, columbium), and the ...

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Prices have occasionally soared to hundreds of dollars per kilogram. Tantalite is an oxide mineral, part of the columbite-tantalite series (Fe,Mn)(Ta,Nb) 2 O 6; a ...

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A generic name for minerals of the Columbite/Tantalite families which are difficult to distinguish without sophisticated tests.

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COLTAN (Columbite-Tantalite) is a dull metallic ore found in major quantities in the eastern areas of Congo. When refined, COLTAN becomes metallic Tantalum, a heat ...

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noun 1. a metallic ore found esp in the E Congo, consisting of columbite and tantalite (a source of the element tantalum)

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TANTALITE (Iron Manganese Tantalum Niobium Oxide)

Tantalite is the most widespread tantalum mineral and makes for an important ore of the industrially useful metal. Tantalum is used in alloys for strength and higher ...

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