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Travertine

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Bauskas district, Zemgale region, Latvia

Show Travertine Photos (5)
Formula:
CaCO
 
3
A variety of Calcite

Travertine is formed by calcium carbonate dissolving in ground water and then being deposited on the earth’s surface by rivers, natural springs, or geysers. Often it is banded or layered and in pastel shades of almost any colour. Sold as "Mexican Onyx" in carvings of chess men etc. Although referred to as "Onyx" in commercial trade, it has the hardness of calcite that is much softer than real Onyx which is a black and white banded agate.

Classification of Travertine

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Chemical Properties of Travertine

Formula:
CaCO
 
3
All elements listed in formula:C, Ca, O

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Travertine

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  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Top quality minerals from Kristalle of California
  • Wendel Minerals - Auktion & Shop
  • Rare and Unusual minerals at Mineralogical Research Company
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    Localities for Travertine

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    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    USA
     
    • Alaska
      • Aleutians East Borough
        • Alaska Peninsula District
    		U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
    • North Carolina
      • Swain Co.
        • Hewitt
    		www.mcrocks.com
    • Virginia
      • Rockingham Co.
    		various photographs
    Mineral and/or Locality
    Google
     
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 1st Nov 2009 04:58:08