Definition
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
History
Origin
Romania and Moldova, Europe
Tamil Nadu, India
Discoverer
Unknown
T. H. Holland
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 Job Charnock, an administtrator of East India Company
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