Potassium Feldspar #200 Mesh KWPF001: K2O - 12% (+/-1%) SiO2 - 67% (+/-2%) Ai2O3 - 18% (+/-0.50%) Na2O - 2.25% (+/- 0.80%) Fe2O3 - 0.08% (+/- .01%) L.O.I - 0.10% Firing Result: White FSK002: K2O - 10% (+/-0.50%) SiO2 - 68% (+/-2%) Ai2O3 - 17.5% (+/-0.50%) Na2O - 3% (+/- 0.50%) Fe2O3 - 0.10% (+/- .02%) L.O.I - 0.20% Firing Result: Milky White