dacite

• Существительное, обозначающее серую вулканическую породу, состоящую в основном из плагиоклаза, кварца и других кристаллических минералов.

A noun referring to a grey volcanic rock composed primarily of plagioclase, quartz, and other crystalline minerals.

uncountable

1. C2formalscientific

   A grey, fine-grained volcanic rock composed mainly of plagioclase feldspar and quartz, along with other minerals like biotite or hornblende.

   Вулканическая порода

   • The cliff was composed of dacite, a common rock in volcanic regions.
   • Geologists identified the sample as dacite due to its quartz content.
   • Dacite often forms in lava flows from stratovolcanoes.