Definition
Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine
History
Origin
Western Australia, Minnesota
New Zealand
Discoverer
Johann Gottlob Lehmann
Ferdinand von Hochstetter
Etymology
From its formation process
From the name of Dun Mountain, New Zealand, + -ite1
Class
Sedimentary Rocks
Igneous 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, Opaque Rock