Definition
Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase
Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material
History
Origin
-
England
Discoverer
Unknown
Unknown
Etymology
From French anorthose plagioclase + -ite1
From Italian, literally gravel, Germanic origin and related to break
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Medium Grained Rock, Opaque Rock