granitite

[ gran-i-tahyt ]
/ ˈgræn ɪˌtaɪt /

noun

a granite rich in biotite.

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Origin of granitite

First recorded in 1870–75; granite + -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for granitite

granitite
/ (ˈɡrænɪˌtaɪt) /

noun

any granite with a high content of biotite
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012