Section 05 MINERAL PRODUCTS 25 SALT;SULPHUR;EARTHS AND STONE;PLASTERING MINERALS, LIME AND CEMENT 25 29 FELSPAR; LEUCITE; NEPHELINE SYENITE; FLUORSPAR. Commodity Code Description 25 29 10 FELSPAR FLUORSPAR: 25 29 21 FLUORSPAR,CONTAINING BY WEIGHT 97% OR LESS OF CALCIUM FLUORIDE 25 29 22 FLUOUSPAR, CONTAINING BY WEIGHT MORE THAN 97% OF CALCIUM FLUORIDE 25 29 30 LEUCITE; NEPHELINE AND NEPHELINE SYENITE