Definition
Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
England
Germany
Discoverer
Unknown
Christian Leopold von Buch
Etymology
From Italian, literally gravel, Germanic origin and related to break
From Greek di + base
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
Fine Grained Rock, Medium Grained Rock, Opaque Rock