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Tantalum Ore a natural mineral formation containing tantalum in compounds and quantities that make its industrial extraction technically feasible and economically ....

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Tantalite | Define Tantalite at Dictionary

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Ferberite: Ferberite mineral information and data

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Tantalite | Define Tantalite at Dictionary

Tantalite definition, a black, crystalline mineral, iron tantalate, (Fe, Mn) Ta 2 O 6 , the principal ore of tantalum and an end member of a series of solid solutions ....

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Niobium Ores | Article about Niobium Ores by The Free ,

Niobium Ores natural mineral formations containing niobium in quantities that make economically feasible the extraction of niobium and its compounds...

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