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
An iron rich extrusive rock found as a member of the alkali basalt magma series
History
Origin
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Isle of Mull, Scotland
Discoverer
William Smith
Ben More
Etymology
From the English mud and stone, from low German mudde and stainaz
From the name of discoverer, Ben More
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Family
Group
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Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock