Definition
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt
It is a metamorphic magnesium rich rock because it is composed of the mineral talc
History
Origin
Germany
USA
Discoverer
Christian Leopold von Buch
Unknown
Etymology
From Latin glaber bare, smooth, bald
From 17th century, because of its greasy feel and use like a soap
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
Plutonic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock