Definition
Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age
Sandstone is defined as a rock which is composed of sand-sized grains of various minerals mostly of uniform size and often are smooth and rounded
History
Origin
Western Australia, Minnesota
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Discoverer
Johann Gottlob Lehmann
Unknown
Etymology
From its formation process
From its composition, sand and stone
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
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Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Opaque Rock