noun
- plural of quartzite; hard metamorphic rocks composed mainly of quartz grains that have been recrystallized
Usage: geology
Examples
- The mountain range was composed primarily of ancient quartzites.
- Geologists found several types of quartzites in the rock formation.
- The quartzites in this region formed millions of years ago.
- These quartzites are extremely resistant to weathering.
- The hiking trail crossed over exposed quartzites.
- Quartzites often display beautiful banded patterns.