uraninite
/jʊˈrænɪnaɪt/
noun
- A dark, heavy mineral that is the main source of uranium and radium.
- Uraninite is often found in granite rocks and is mined for its uranium content.
- Scientists study uraninite to learn about the Earth's geological history.
- The museum displayed a sample of uraninite from a mine in the Czech Republic.
Synonyms