Definition
Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material
Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite
History
Origin
England
Italy
Discoverer
Unknown
Unknown
Etymology
From Italian, literally gravel, Germanic origin and related to break
Comendite derives its name from the area of Le Commende on San Pietro Island in Italy
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Medium Grained Rock, Opaque Rock