The present invention relates to a process for the preparation of an aqueous suspension comprising at least one calcium carbonate comprising material the calcium carbonate comprising material having a ratio of particles having an average particle size value to particles having an average particle size value [/] in the range from 1.5 to 4 and the use of the calcium carbonate comprising material in paper and board applications in cosmetics in caulks and sealants in adhesives in paints and coatings in fibre applications in plastics applications or for the replacement of PCC in general.