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