Detection of new olivine-rich locations on Vesta
Ernesto Palomba, Andrea Longobardo, Maria Cristina De Sanctis, Angelo Zinzi, Eleonora Ammannito, Simone Marchi, Federico Tosi, Francesca Zambon, Maria Teresa Capria, Christopher T. Russell, Carol A. Raymond, Edward A. Cloutis
In Press, Accepted Manuscript, Available online 14 June 2015
In agreement with the recent discovery, Arruntia and Bellicia were found to be as the most olivine-rich areas, i.e. where the parameter values are strongest. In addition we detected 6 new regions, all but one located in the Vesta north hemisphere. This result confirms again that the old petrogenetic models cannot be straightforwardly applied to Vesta and should be reshaped in the view of these new detections. An alternative and very recent option can be represented by the model according to which surface “eruption” of material from the mantle, including olivine can reach the surface of Vesta.