picritic
/pɪˈkrɪtɪk/
adjective
- Relating to or containing picrite, a dark, coarse-grained igneous rock rich in olivine.
- Picritic lavas are denser than typical basaltic flows.
- The sample showed a picritic composition with large olivine crystals.
- The geologist identified a picritic layer in the ancient volcanic deposit.