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pyrochlore |
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pyrochlore [′pī·rə‚klȯr] (mineralogy) (Na,Ca)2(Nb,Ta)2O6(OH,F) Pale-yellow, reddish, brown, or black mineral, crystallizing in the isometric system, and occurring in pegmatites derived from alkalic igneous rocks. Also known as pyrrhite. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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A Quebec mining company intends to extract industrial minerals from its recently-acquired pyrochlore property on the James Bay lowlands. The study of perovskite and pyrochlore oxide materials is also an important area, due to properties such as magnetorestriction (70), charge disproportionation (71), and ionic conductivity (72). The pyrochlore concentrate produced at Niobec is transformed into ferroniobium grading 66% niobium using an aluminothermic converter. |
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