Definition
Blue Granite is an igneous rock and a variety of Larvikite, notable for the presence of thumbnail-sized blue crystals of feldspar
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt
History
Origin
-
Germany
Discoverer
Unknown
Christian Leopold von Buch
Etymology
From the color of rock, Blue
From Latin glaber bare, smooth, bald
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
Plutonic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock