noun
- a rare aluminum silicate mineral that forms at high temperatures and is used in refractory materials
Usage: mineralogy; technical
Examples
- Mullite is commonly found in fired clay and ceramic materials.
- The refractory brick contained mullite to withstand extreme heat.
- High-temperature kilns often produce mullite as a byproduct.
- Geologists identified mullite crystals in the metamorphic rock sample.
- The ceramic engineer specified mullite-based materials for the furnace lining.