a very hard metamorphic rock consisting of a mosaic of intergrown quartz crystals a white or grey sandstone composed of quartz
WordReference Random House Unabridged Dictionary of American English © 2025
quartz•ite
(kwôrt′sīt),USA pronunciation n.
quartz•it•ic
(kwôrt sit′ik),USA pronunciation adj.
- Rocksa granular metamorphic rock consisting essentially of quartz in interlocking grains.
- 1840–50; quartz + -ite1
Collins Concise English Dictionary © HarperCollins Publishers::
'quartzite' also found in these entries (note: many are not synonyms or translations):