A volcanic rock containing 63-68% silica with a high viscosity when in a molten state
A volcanic rock that contains chiefly quartz, alkali feldspar, and plagioclase; and minor amounts of mafic minerals (especially, biotite, hornblende, and pyroxene) Dacite is the extrusive variety of granodiorite
Igneous volcanic rock, less mafic than andesite, typically fine-grained and light in color; rough volcanic equivalent of granodiorite
dacite
Aussprache
Etymologie
() From German Dazit. First used in 1863 by Austrian geologists Franz von Hauer and Guido Stache, in a description of the geology of Transsylvania. Named after the Roman province of Dacia (present-day Romania).