Definition
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
Pike County, U.S
Germany
Discoverer
Unknown
Christian Leopold von Buch
Etymology
From French, from peridot + -ite
From Greek di + base
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, Medium Grained Rock, Opaque Rock