rhyolitic
/ˌraɪəˈlɪtɪk/
adjective
- Relating to or consisting of rhyolite, a type of volcanic rock that is light in color and rich in silica.
- The rhyolitic lava from the ancient volcano cooled into a pale gray stone.
- Hikers admired the rhyolitic cliffs, which shimmered with tiny quartz crystals.
- Geologists studied the rhyolitic ash layers to learn about past eruptions.