picrite
/ˈpɪkraɪt/
noun
- A dark, coarse-grained igneous rock rich in olivine and pyroxene, often found in volcanic regions.
- Geologists collected samples of picrite from the ancient lava flow.
- The mountain's core was composed largely of picrite and basalt.
- Picrite is denser than most other volcanic rocks due to its high olivine content.