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Critical Minerals AK – Indispensable Twins

Niobium, tantalum are closely related metals with nuanced properties that make them critical to many economic sectors North of 60 Mining News – December 1, 2018

With nearly indistinguishable physical and chemical properties, niobium and tantalum are almost always found together in nature. Both are also critical to the defense, energy and high-tech sectors in the United States, but neither are mined domestically. For these reasons, the United States Geological Survey considers these transition metals "indispensable twins" that are critical to America's eco...

 

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