Definition
Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite
It is a metamorphic magnesium rich rock because it is composed of the mineral talc
History
Origin
Italy
USA
Discoverer
Unknown
Unknown
Etymology
Comendite derives its name from the area of Le Commende on San Pietro Island in Italy
From 17th century, because of its greasy feel and use like a soap
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
Volcanic
-
Other Categories
Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock