calcium carbonate :97%min Fe content :0.08%max 400 mesh ---800mesh used for paper making ,painting delevery in time 1 lime stone product index1)CaCO3 ≥97%,MgO ≤0.6%,SiO2 ≤1%,Fe2O3 ≤0.06%2)CaCO3 ≥96%,MgO ≤1.6%,SiO2 ≤1.4%,Fe2O3 ≤0.06%2 Lime stone specification1)0 mesh---400 mesh