Section V — Mineral products
Chapter 25 — Salt; sulfur; earths and stone; plastering materials, lime and cement
Heading
2529 Feldspar; leucite, nepheline and nepheline syenite; fluorspar.
Common commodities
Crude leucite for glass manufacturingCrushed nepheline syenite for ceramicsGround feldspar for ceramic glazesCalcium fluoride flux materialPotassium aluminosilicate in crude formNepheline ore for fluxCrude leucite for chemical industryCrushed fluorspar for cement productionFeldspar rocks for glass makingGround nepheline for ceramic bodies