Definition
Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material
Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase
History
Origin
England
Finland, Europe
Discoverer
Unknown
Jakob Sederholm
Etymology
From Italian, literally gravel, Germanic origin and related to break
From Finnish Rapakivi which stands for crumbly rock
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
-
Plutonic
Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock