Definition
Skarns are formed during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, and/or marine origin
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
USA, Australia
Germany
Discoverer
Tornebohm
Christian Leopold von Buch
Etymology
From an old Swedish mining term originally used to describe a type of silicate gangue or waste rock.
From Greek di + base
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock