Definition
An iron rich extrusive rock found as a member of the alkali basalt magma series
Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar
History
Origin
Isle of Mull, Scotland
France
Discoverer
Ben More
Alexandre Brongniart
Etymology
From the name of discoverer, Ben More
From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock