Definition
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
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 Greek di + base
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
Volcanic
Plutonic
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock