Definition
Rhyolite is a fine-grained igneous rock which is rich in silica
Wehrlite is an ultramafic and ultrabasic rock that is a mixture of olivine and clinopyroxene. It is a subdivision of the peridotites
History
Origin
North America
Egypt
Discoverer
Ferdinand von Richthofen
Alois Wehrle
Etymology
From German Rhyolit, from Greek rhuax lava stream + lithos stone
From the name of a professor, Alois Wehrle
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
Plutonic
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock