mafic
/ˈmæfɪk/
adjective
- Describing a type of igneous rock that is rich in magnesium and iron, and is usually dark in color.
- Basalt is a common mafic rock found on the ocean floor.
- Mafic minerals like olivine and pyroxene give the rock its greenish-black color.
- The geologist identified the dark, heavy sample as mafic in composition.
Antonyms