noun
- plural of phonolite: fine-grained volcanic rocks that produce a ringing sound when struck
Usage: geology
Examples
- The geologist collected samples of phonolites from the ancient volcanic field.
- These phonolites were formed during explosive volcanic eruptions millions of years ago.
- The distinctive ringing sound of phonolites helps identify them in the field.
- Phonolites are commonly found in areas with alkaline volcanic activity.
- The museum’s mineral collection includes several specimens of phonolites from different regions.