melaphyre
/ˈmɛləˌfaɪər/
noun
- A dark-colored volcanic rock, similar to basalt, often containing visible crystals.
- The old stone wall was built from local melaphyre, giving it a dark, speckled appearance.
- Geologists collected samples of melaphyre to study its mineral composition.
- The hiking trail passed through an ancient lava flow made of melaphyre.