xenotime
/ˈzɛnəˌtaɪm/
noun
- A yellowish-brown mineral that contains rare earth elements, often used in scientific research and industry.
- The geologist found a sample of xenotime in the old mine.
- Scientists study xenotime to learn about the geological history of an area.
- Xenotime is an important source of yttrium and other rare earth metals.