Definition
Taconite is a low-grade iron ore which belongs to sedimentary rock and containing about 27% iron and 51% silica
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
History
Origin
Western Australia, Minnesota
Italy
Discoverer
Newton Horace Winchell
Marcus Vitruvius Pollio
Etymology
From the name of Taconic Mountains in New England
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
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-
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock