Definition
Flint is a hard type of sedimentary rock that produces a small piece of burning material when hit by steel
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
History
Origin
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Discoverer
Unknown
William Smith
Etymology
From Old English flint - a type of rock mainly known for high hardness and for giving off sparks when struck
From the English mud and stone, from low German mudde and stainaz
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
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Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock