noun
- Plural of dumortierite; aluminum borosilicate minerals that typically occur as blue or violet crystals, used in ceramics and refractory materials.
Usage: technical; mineralogy
Examples
- Dumortierites are valued in the ceramic industry for their high-temperature stability.
- The geologist identified several dumortierites in the metamorphic rock sample.
- Blue dumortierites are prized by mineral collectors for their striking color.
- Industrial applications of dumortierites include use in refractory bricks and advanced ceramics.