HS CodesV · Mineral products25 · Salt; sulphur; earths and stone; plastering materials, lime and cement25102510Chapter 25Copy pageNatural calcium phosphates, natural aluminium calcium phosphates and phosphatic chalkDescriptionNatural calcium phosphates, natural aluminium calcium phosphates and phosphatic chalkSubheadings251010Unground251020GroundWas this page helpful?YesNoPrevious2509ChalkNextNatural barium sulphate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 28162511