Definition
Kimberlite is a rare, blue-tinged, coarse-grained intrusive igneous rock, which sometimes contains diamonds and is mostly found in South Africa and Siberia.
Rhyolite is a fine-grained igneous rock which is rich in silica
History
Origin
Kimberley, South Africa
North America
Discoverer
John W. Judd
Ferdinand von Richthofen
Etymology
From Kimberley + -ite, from the name of the South African town of Kimberley where the rock was first found.
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
Volcanic
Volcanic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock