bæstˈneɪsaɪt

Definitions

1. noun

A rare earth mineral, a lanthanide carbonate with the chemical formula LaCO3F.

“The geologist discovered a new deposit of bastnasite in the remote mining area.”

2. chemistry

A chemical compound with the formula LaCO3F, a lanthanide carbonate with fluoride.

“The chemist studied the properties of bastnasite in the lab.”