Definition
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
History
Origin
Pike County, U.S
Italy
Discoverer
Unknown
Marcus Vitruvius Pollio
Etymology
From French, from peridot + -ite
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
Plutonic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock