Definition
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.
History
Origin
Italy
Central Europe
Discoverer
Marcus Vitruvius Pollio
Unknown
Etymology
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
From Latin granulum, a little grain or fine grained
Class
Sedimentary Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Medium Grained Rock, Opaque Rock