Definition
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt
History
Origin
Pike County, U.S
Germany
Discoverer
Unknown
Christian Leopold von Buch
Etymology
From French, from peridot + -ite
From Latin glaber bare, smooth, bald
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
Plutonic
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock