Definition
Rhyolite is a fine-grained igneous rock which is rich in silica
A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles
History
Origin
North America
European Foreland Basins
Discoverer
Ferdinand von Richthofen
Arnold H. Bouma
Etymology
From German Rhyolit, from Greek rhuax lava stream + lithos stone
From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
Volcanic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Opaque Rock