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coffinite

[kaw-fi-nahyt, kof-i-] /ˈkɔ fɪ naɪt, ˈkɒf ɪ-/
noun
1.
a mineral, black uranous silicate, USiO 4 , an important ore of uranium.
Origin
1950-1955
1950-55; coffin + -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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