Citation: Merli, M.; Oberti, R.; Caucia, F.; Ungaretti, L. (2001). Determination of site population in olivine: Warnings on X-ray data treatment and refinement Sample: F-refinement using CRYSTALS on the 2491 reflections with Fo/sFo>1 Fo92Fa08. American Mineralogist, 86, pp. 55-65.