Definition
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar
History
Origin
Italy
France
Discoverer
Marcus Vitruvius Pollio
Alexandre Brongniart
Etymology
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock