Definitions for dacite
This page provides all possible meanings and translations of the word dacite
a grey volcanic rock containing plagioclase and quartz and other crystalline minerals
An igneous, volcanic rock with a high iron content.
Origin: From Dazit, from Dacia. First used in 1863 by Austrian geologists Franz von Hauer and Guido Stache, in a description of the geology of Transsylvania.
Dacite is an igneous, volcanic rock. It has an aphanitic to porphyritic texture and is intermediate in composition between andesite and rhyolite. The relative proportions of feldspars and quartz in dacite, and in many other volcanic rocks, are illustrated in the QAPF diagram. Dacite is also defined by silica and alkali contents in the TAS classification. The word dacite comes from Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described.
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