A very hard, metamorphic sandstone so firmly cemented that breakage occurs through grains rather than between them.
Any sandstone tightly cemented with quartz.
A rock formed from the metamorphism of quartz sandstone.
A metamorphic rock consisting entirely of quartz. Quartzite forms when sandstone or chert are heated during metamorphism.
Origin of quartzite
From quartz +"Ž -ite.