pyrites
/paɪˈraɪtiːz/
noun
- A plural form of pyrite, referring to multiple pieces or types of the mineral; also used as a singular noun for a group of sulfide minerals that include pyrite.
- Geologists study pyrites to learn about ancient volcanic activity.
- Some pyrites contain small amounts of copper or other metals.
- The museum displayed a collection of pyrites from different parts of the world.