Definition
Origin
Discoverer
Etymology
Class
Sub-Class
Group
Other Categories
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt
Christian Leopold von Buch
From Latin glaber bare, smooth, bald
Coarse Grained Rock, Opaque Rock
Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption
From a Latin word tophous then in Italian tufo and finally tuff
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock