Definition
Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
History
Origin
Iceland
Italy
Discoverer
Unknown
Marcus Vitruvius Pollio
Etymology
From German Tachylite, from tachy- + Greek lutos soluble, melting
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
Volcanic
-
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock