The present invention relates to solid compositions, preferably in powder or granule form, based on minerals (semi-finished or raw material) and a process for preparing said solid compositions. Furthermore, the present invention relates to solid formulations (final products) and orally disintegrating formulations (final products) containing said solid compositions. Moreover, the present invention relates to a process for preparing said solid formulations and said orally disintegrating formulations. Finally, the present invention relates to the use of said solid compositions or said solid or orally disintegrating formulations in the treatment of disorders or diseases related to or derived from a deficiency of minerals such as magnesium (II), calcium (II), iron (III), zinc (II) and/or iodine. All the compositions or formulations of the present invention are suitable for pediatric subjects, adolescents, athletes, men, women, pregnant women and elderly.