Definition
Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite
Marl is an unconsolidated sedimentary rock consisting of clay and lime
History
Origin
Italy
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Discoverer
Unknown
William Smith
Etymology
Comendite derives its name from the area of Le Commende on San Pietro Island in Italy
From Old French marle, from Late Latin marglia
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
Volcanic
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Other Categories
Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock