noun
- A calcium aluminum borosilicate mineral, typically brown or black in color, found in metamorphic rocks.
Usage: mineralogy; technical
Examples
- Axite crystals were identified in the metamorphic rock sample.
- The geologist examined the axite specimen under the microscope.
- Axite is one of the tourmaline group minerals found in contact metamorphic zones.
- The brown axite mineral displayed characteristic cleavage patterns.