Definition
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.
History
Origin
Romania and Moldova, Europe
Central Europe
Discoverer
Unknown
Unknown
Etymology
From Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described
From Latin granulum, a little grain or fine grained
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
-
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Medium Grained Rock, Opaque Rock