Definition
Blueschist is a metamorphic rock which is generally blue in color and is formed under conditions of high pressure and low temperature
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
History
Origin
USA
Italy
Discoverer
Edgar Bailey
Marcus Vitruvius Pollio
Etymology
From French schiste, Greek skhistos i.e. split
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, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
-
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock