syenite
/ˈsaɪənaɪt/
noun
- A gray, coarse-grained igneous rock similar to granite but containing little or no quartz.
- The ancient temple was built with blocks of syenite quarried from a nearby mountain.
- Syenite is sometimes used as a decorative building stone due to its attractive speckled appearance.
- Geologists identified the outcrop as syenite because of its feldspar-rich composition.