- a very hard, metamorphic sandstone so firmly cemented that breakage occurs through grains rather than between them
- any sandstone tightly cemented with quartz
Origin: quartz plush -ite
Used by arrangement with John Wiley & Sons, Inc.
quartzite - Science Definition
Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.