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