Rock Identifier
Travertine (Calcium Carbonate (CaCO3)) — sedimentary
sedimentary

Travertine

Calcium Carbonate (CaCO3)

AI-generated identification · may be incorrect

Mohs hardness of 3, varies in color from white to tan and cream, vitreous to dull luster, and possesses a banded or fibrous crystal structure.

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Physical properties

Mohs hardness of 3, varies in color from white to tan and cream, vitreous to dull luster, and possesses a banded or fibrous crystal structure.

Formation & geological history

Formed through the precipitation of carbonate minerals from supersaturated hydrothermal waters, typically around hot springs or limestone caves.

Uses & applications

Widely used as a dimensional stone for architectural building facades, interior flooring, tiles, countertops, and decorative carvings.

Geological facts

Travertine has been used as a building material since ancient times, most famously in the construction of the Colosseum in Rome.

Field identification & locations

Identified by its characteristic fibrous banding and reactive effervescence when exposed to dilute hydrochloric acid; commonly found in Italy, Turkey, and the US.