Supplier: We provide the following feldspar compositions, sio2: 73.65, 77.41, 71.02, 73.5, 74.06, 63.09, 79.07, 78.29 al2o3: 12.1, 10.38, 13.09, 13.82, 10.90, 13.52, 11.77, 10.91 fe2o3: 2.89, 1.52, 4.2, 0.63, 1.83, 3.14, 0.67, 1.57 mno: 0.008, 0.032, 0.027, 0.2, 0.036, 0.088, 0.014, 0.036 tio2: 0.07, 0.093, 0.24, 0.1, 0.118, 0.147, 0.068, 0.154 cao: 0.13, 0.69, 0.42, 1.07, 1.18, 2.22, 0.44, 0.17 mgo: 2.6, 0.43, 1.62, 0.59, 0.76, 2.01, 0.02, 0.84 na2o: 0.16, 0.19, 0.24, 4.03, 0.19, 0.64, 6.43, 3.28 k2o: 3.23, 7.04, 7.36, 5.11, 7.49, 9.71, 0.67, 3.71 p2o5: 0.011, 0.018, 0.025, 0.033, 0.011, 0.023, 0.014, 0.024 so3: 0.25, 0.15, 0.36, 0.19, 0.159, 0.420, 0.146, 0.186 l.o.i: 4.8, 1.89, 1.24, 0.49, 2.99, 4.49, 0.51, 0.66