felsic
/ˈfɛlsɪk/
adjective
- Describing igneous rock that is rich in light-colored minerals such as quartz and feldspar, and typically has a high silica content.
- Geologists classify the rock as felsic because of its high quartz content.
- Granite is a common felsic rock found in many mountain ranges.
- Felsic lava is thicker and less fluid than mafic lava.
Antonyms