Definition
Mudstone is a fine-grained, dark gray sedimentary rock, which is formed from silt and clay and is similar to shale but has less laminations
Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age
History
Origin
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Western Australia, Minnesota
Discoverer
William Smith
Johann Gottlob Lehmann
Etymology
From the English mud and stone, from low German mudde and stainaz
From its formation process
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Family
Group
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-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock