Present work evaluates the structural changes in olivine (Mg,Fe)(2)SiO(4) (deposit Aheim, Norway) generated by mechanical treatment as well as its adsorption properties for carbon dioxide. The high-energy attrition milling was applied for mechanical activation. Identification of the mechanically-induced changes in the mineral was carried out applying various techniques: scanning electron microscopy. Mossbauer spectroscopy, specific surface measurements, carbon dioxide adsorption and Fourier-transformed infrared spectroscopy. The observed changes in the physico-chemical properties illustrate the possibility of the applied activation to modify the surface and/or bulk properties of olivine. Sensitivity for atmospheric CO(2) sequestration as well as sequestration of CO(2) by chemisorption can be derived from the obtained results. (C) 2010 Elsevier Ltd. All rights reserved.