Definition
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt
History
Origin
Romania and Moldova, Europe
Germany
Discoverer
Unknown
Christian Leopold von Buch
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 glaber bare, smooth, bald
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
Plutonic
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock