sedimentary
Travertine
Travertine (CaCO3)
Hardness: 3-4 (Mohs scale); Color: Tan, cream, white, or reddish-brown; Luster: Dull to pearly; Crystal structure: Trigonal; Cleavage: Perfect rhombohedral; Porosity: High (often filled with resin for tile use).
- Hardness
- 3-4 (Mohs scale)
- Color
- Tan, cream, white, or reddish-brown
- Luster
- Dull to pearly
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Physical properties
Hardness: 3-4 (Mohs scale); Color: Tan, cream, white, or reddish-brown; Luster: Dull to pearly; Crystal structure: Trigonal; Cleavage: Perfect rhombohedral; Porosity: High (often filled with resin for tile use).
Formation & geological history
Formed by the rapid precipitation of calcium carbonate, often at the mouth of hot springs or in limestone caves. It is a terrestrial sedimentary rock.
Uses & applications
Extensively used as a building material for flooring, wall cladding, and backsplashes. Famous historical use includes the Colosseum in Rome.
Geological facts
Travertine is one of the most frequently used stones in modern architecture. It is essentially a compact form of limestone deposited by mineral springs.
Field identification & locations
Identify in the field by its characteristic pitted surface and concentric or fibrous appearance. Commonly found in Italy, Turkey, and Yellowstone National Park, USA.
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