Design by Antonio Saladini
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TRAVERTINE Travertine is a sedimentary rock of chemical origin having a continental face and carbonic nature due to the precipitation of calcium carbonate from water containing bicarbonate as a result of the loss of carbon dioxide, released by the increased pressure and temperature. The carbon dioxide contained in the ground comes into contact with water and forms carbonic acid H₂CO3.Carbonic acid transforms the insoluble calcium carbonate to soluble calcium bicarbonate:

H2O + CO2 + H2CO3  ↔ CaCO3 + H2CO3 + Ca (CO3H)2

water + Carbon dioxide + Carbonic Acid ↔ Calcite + Carbonic Acid  + Calcium Bicarbonate

As we know, bicarbonate is soluble and therefore removable and transportable in a form dissociated from water.

 

Bibliography:
  • F. Ippolito, P. Nicotera, P. Lucini M. Civita R. de Riso “Geologia Tecnica per ingegneri e geometri” Tipografia ISEDI Istituto editoriale Internazionale Milano
 
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