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.
Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite
History
Origin
Kimberley, South Africa
Italy
Discoverer
John W. Judd
Unknown
Etymology
From Kimberley + -ite, from the name of the South African town of Kimberley where the rock was first found.
Comendite derives its name from the area of Le Commende on San Pietro Island in Italy
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
Medium Grained Rock, Opaque Rock