Sub-Chapter200520062007
Salt (including table salt)$147,079$78,479$33,058
Natural graphite.$3,987$200 
Natural sands of all kinds$7,275$1,785$1,057
Quartz (other than natural sands); quartzite$3,519$714$1,946
Kaolin and other kaolinic clays, whether or not calcined. $17 
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$5,041$735$884
Natural calcium phosphates  $2
Pumice stone; emery; other natural abrasives$4,743$656$106
Slate$33,184$6,305$122
Marble, travertine, ecaussine and other stone$18$707$3,822
Granite, porphyry, basalt, sandstone and other stone$17,651$12,026$19,170
Pebbles, gravel, broken or crushed stone $68$10
Dolomite, whether or not calcined or sintered $15 
Natural magnesium carbonate (magnesite)  $24
Gypsum; anhydrite; plasters$6  
Limestone flux; limestone$50$655 
Quicklime, slaked lime and hydraulic lime$3$83$10
Portland cement, aluminous cement, slag cement $21,288$245,960
Mica, including splitings; mica waste. $763 
Natural steatite, whether or not roughly trimmed $7$135
Felspar; leucite and nepheline syenite$25,350,962$35,065,647$44,953,846
Mineral substances$885$849$2,302
Total$25,574,403$35,190,999$45,262,454