Price is indicative only, it may change without prior notice and depends on requirements and can be negotiated case to case. Feldspar is generally used for Ceramics, Glass, Electrodes. The glass and ceramic industries are the major consumers of feldspar and account for 95% of the total consumption. Potash Feldspar PF/01 Silica SiO2 68% ( + 1% ) Alumina Al2O3 18% ( + 1% ) Sodium Oxide Na2O 2% ( + 0.5% ) Potassium Oxide K2O 11.50% ( + 0.5% )/td> Titanium Oxide TiO2 Nil Calcium Oxide CaO 0.50% Magnesium Oxide/td> MgO Traces Ferric Oxide Fe2O3/td> 0.08% ( + 0.05% ) Loss On Ignition LOI 0.40%