Definition
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt
History
Origin
Italy
Germany
Discoverer
Marcus Vitruvius Pollio
Christian Leopold von Buch
Etymology
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
From Latin glaber bare, smooth, bald
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
Plutonic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock