Surface-treated calcium carbonate and a resin composition containing the same

Following equation (a) surface-treated with a fatty acid surface treatment agent satisfying, to provide a surface treated calcium carbonate characterized by satisfying the surface treated calcium carbonate of the formula (b). (A) C12 + C14 ≧ 85 (%) (b) Pv ≦ 90 (%) C12: ratio of fatty acid-based surface treatment agent having an alkyl group of 12 carbon atoms C14: fatty acid-based surface treatment agent having an alkyl group with a carbon number of 14 surface-treated calcium carbonate sedimentation volume ratio (vol%) present invention in hexane, balance slip resistance and slump resistance may comprise a resin composition, in particular, a resin having excellent slip resistance: percentage Pv of it is possible to provide a composition.