Definition
Pyrolite is an igneous rock consisting of about three parts of peridotite and one part of basalt
Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components
History
Origin
Pike County, U.S
Southern Alps, France
Discoverer
Unknown
Jakob Sederholm
Etymology
From the chemical and mineralogical composition of the upper mantle of the Earth
From the Greek word migma which means a mixture
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
Plutonic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock