Definition
It is a metamorphic magnesium rich rock because it is composed of the mineral talc
Marl is an unconsolidated sedimentary rock consisting of clay and lime
History
Origin
USA
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Discoverer
Unknown
William Smith
Etymology
From 17th century, because of its greasy feel and use like a soap
From Old French marle, from Late Latin marglia
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Soft Rock
Family
Group
-
-
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock