colemanite
/ˈkoʊlmənaɪt/
noun
- A soft, colorless or white mineral that is a source of boron, used in making glass, ceramics, and detergents.
- Geologists discovered a large vein of colemanite in the ancient lakebed.
- Colemanite is often mined in desert regions where boron deposits are found.
- The factory uses colemanite to produce heat-resistant glass for laboratory equipment.