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Mibra mine
Niobium (Nb)

Production of raw materials

The primary mineral from which niobium is obtained is known as pyrochlore. The world’s largest deposit is located in Araxa, Brazil and is owned by Companhia Brasileira de Metalurgia e

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Processing: extraction and refining
Tantalum (Ta)

Processing: extraction and refining

The extraction and refining of tantalum, including its separation from niobium in various tantalum-containing mineral concentrates, is generally accomplished by treating the ores with a mixture of hydrofluoric and sulfuric

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Mibra mine
Tantalum (Ta)

Production of raw materials

Extraction or production of tantalum raw materials is widespread, encompassing primary industrial mining, artisanal mining, as a secondary mineral, or as a by-product. Brazil is currently the major producer, with

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