phyllites
/ˈfɪlaɪts/
noun
- A type of metamorphic rock that is shiny and has thin layers, often used in construction or as a decorative stone.
- Geologists collected samples of phyllites from the mountain to study their mineral composition.
- The old church was built with local phyllites that sparkled in the sunlight.
- The garden path was lined with slabs of phyllites, giving it a natural, elegant look.