Definition
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt
Pyrolite is an igneous rock consisting of about three parts of peridotite and one part of basalt
History
Origin
Germany
Pike County, U.S
Discoverer
Christian Leopold von Buch
Unknown
Etymology
From Latin glaber bare, smooth, bald
From the chemical and mineralogical composition of the upper mantle of the Earth
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Plutonic
Plutonic
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock