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and niobium (Nb) are common impurities in brookite.

Brookite was named in 1825 by French mineralogist Armand Lévy for Henry James Brooke (1771-1857), an English crystallographer, mineralogist and wool trader.

Arkansite is a variety of brookite from Magnet Cove, Arkansas, US. It is also found in the Murun Massif

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