Definition
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle
Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava
History
Origin
Pike County, U.S
North America
Discoverer
Unknown
Theodor von Gümbel
Etymology
From French, from peridot + -ite
From Andes mountains, where it is found in abundance
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock