Heavy duty laundry detergent

A heavy duty particulate laundry detergent composition comprising in weight percentages, 12% paraffin sulfonate wherein the paraffin alkyl group is from 14 to 20 carbons with an average of 15 carbons, 6% higher olefin sulfonate produced by sulfonating an alpha-olefin of 15 to 20 carbons with about one equivalent of diluted sulfur trioxide, neutralizing with excess sodium hydroxide and heating the alkaline mixture above 150.degree. C. to open the sultone rings in the mixture, 25% polysilicate of the formula Na.sub.2 SiO.sub.3 wherein the ratio Na.sub.2 O to SiO.sub.2 is 1 to 2.5, 10% 4 A zeolite molecular sieve containing 2% moisture and having a mean particle diameter of 8.3 microns, 0.5% sodium carboxymethyl cellulose, 1% optical brightener, 0.5% perfume, 26.7% anhydrous sodium sulfate, 15% moisture and 3.3% other materials associated with paraffin and olefin sulfonates.