Definition
Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
Western Australia, Minnesota
Germany
Discoverer
Johann Gottlob Lehmann
Christian Leopold von Buch
Etymology
From its formation process
From Greek di + base
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock