硅40-55%,铝25-38%,钾4-9%,钠2-4.5%,铁0.2-1.5%,钛0.5-2%
钠(Na20)含量7.65%,钾(K2O)含量2.74%,铝(Al2O3)含量27.03%,烧失量1.89%