Definition
Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite
History
Origin
Southern Alps, France
Romania and Moldova, Europe
Discoverer
Jakob Sederholm
Unknown
Etymology
From the Greek word migma which means a mixture
From Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Family
Group
-
Volcanic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock