硅40-55%,鋁25-38%,鉀4-9%,鈉2-4.5%,鐵0.2-1.5%,鈦0.5-2%
鈉(Na20)含量7.65%,鉀(K2O)含量2.74%,鋁(Al2O3)含量27.03%,燒失量1.89%