Definition
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
History
Origin
Italy
Tamil Nadu, India
Discoverer
Marcus Vitruvius Pollio
T. H. Holland
Etymology
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
From Job Charnock, an administtrator of East India Company
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
Plutonic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock