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.
Gritstone or grit is a hard, coarse-grained, siliceous sandstone
History
Origin
Kimberley, South Africa
Pennines, England
Discoverer
John W. Judd
J.J. Ferber
Etymology
From Kimberley + -ite, from the name of the South African town of Kimberley where the rock was first found.
From Grit + Stone
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
-
Other Categories
Coarse Grained Rock, Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock