scheelitePronunciation: /ˈʃiːlʌɪt/Definition of scheelite noun [mass noun] a fluorescent mineral, white when pure, which consists of calcium tungstate and is an important ore of tungsten. Origin: mid 19th century: from the name of Carl W. Scheele (1742–86), Swedish chemist, + -ite1scheelite in other Oxford dictionaries Definition of scheelite in the US English dictionary