Definition
Definition
An iron rich extrusive rock found as a member of the alkali basalt magma series
History
Origin
Isle of Mull, Scotland
Discoverer
Ben More
Etymology
From the name of discoverer, Ben More
Class
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock