Definition
Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material
Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components
History
Origin
England
Southern Alps, France
Discoverer
Unknown
Jakob Sederholm
Etymology
From Italian, literally gravel, Germanic origin and related to break
From the Greek word migma which means a mixture
Class
Sedimentary Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
-
Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock