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fergusonite

[fur-guh-suh-nahyt] /ˈfɜr gə səˌnaɪt/
noun
1.
a rare-earth mineral, yttrium columbate and tantalate, found in pegmatites.
Origin
1820-1830
1820-30; named after R. Ferguson, 19th-century Scottish physician; see -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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