pneumatolytic
/ˌnjuːmətəˈlɪtɪk/
adjective
- Relating to the formation or alteration of rocks by hot gases and fluids from magma, especially in geology.
- Pneumatolytic processes created the rare minerals in that volcanic region.
- Geologists studied the pneumatolytic veins in the granite quarry.
- The crystals formed under pneumatolytic conditions deep underground.