Electrokinetic consolidation with Mg-rich hydroxyapatite to improve structural stability of elephant tusks from marine archaeological sites

• Conservation of elephant tusk from underwater sites, using an electroprecipitation method as consolidation treatment. • Consolidation method applied on wet samples to reduce the risk of fracturing caused by stresses generated during the drying process. • Electroprecipitation of Mg-rich HAP to restore the integrity of the elephant’s defenses while extracting the soluble salts. • Electrokinetic treatment effective in any direction of application and with low aesthetic risk.