Definition
Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava
An iron rich extrusive rock found as a member of the alkali basalt magma series
History
Origin
North America
Isle of Mull, Scotland
Discoverer
Theodor von Gümbel
Ben More
Etymology
From Andes mountains, where it is found in abundance
From the name of discoverer, Ben More
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock