Definition
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
Rhyolite is a fine-grained igneous rock which is rich in silica
History
Origin
Tamil Nadu, India
North America
Discoverer
T. H. Holland
Ferdinand von Richthofen
Etymology
From Job Charnock, an administtrator of East India Company
From German Rhyolit, from Greek rhuax lava stream + lithos stone
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock