Travertine
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Mineral NameTravertine
Chemical FormulaCaCO3
Mohs Hardness3.5
Crystal Systemamorphous
Lusterearthy
Streak Colorwhite
CleavageNone observed in massive form
Fractureuneven
Specific Gravity2.6
Colorswhite, cream, tan, brown, reddish-brown, green
Transparencyopaque
Type LocalityHammam Chellala, Guelma, Algeria
Mineral GroupCarbonates
Usesbuilding material, decorative stone, sculpture
Associated Mineralscalcite, aragonite, iron oxides, manganese oxides
Raritycommon
Description
This image displays a large, terraced travertine formation, characterized by its layered structure and a spectrum of colors including white, cream, brown, and green, with water actively flowing over its surfaces.
Geological Context
Travertine is a terrestrial sedimentary rock formed by the precipitation of carbonate minerals from mineral springs, often hot springs. Its formation is driven by the supersaturation of calcium carbonate in the water, leading to deposition as water flows and degasses CO2.
