- a granular metamorphic rock consisting essentially of quartz in interlocking grains.
Origin of quartzite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for quartzite
For furnace linings, the quartzite or ganister must be exceptionally pure.
Pebbles of the conglomerate are mainly quartz and quartzite.
The magnetic iron ore is associated with hornblende and quartzite.A Report on Washington Territory
William Henry Ruffner
For them flint and quartzite took the place of bronze, iron, or steel.Men of the Old Stone Age
Henry Fairfield Osborn
It appears to us from its use to have been either a quartzite or a fissile limestone.De Re Metallica
- a very hard metamorphic rock consisting of a mosaic of intergrown quartz crystals
- a white or grey sandstone composed of quartz
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
Word Origin and History for quartzite
Online Etymology Dictionary, © 2010 Douglas Harper
- A metamorphic rock consisting entirely of quartz. Quartzite forms when sandstone or chert are heated during metamorphism.
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