| Phen-3 | Phen-4 | omp-18 | Phen-25 | Phen-26 | Phen-27 | Phen-28 | Phen-32 | Phen-36 | Phen-37 | Phen-41 | Phen-42 |
SiO2 | 51.22 | 51.12 | 50.99 | 50.92 | 51.17 | 51.11 | 51.10 | 50.13 | 50.18 | 50.87 | 51.35 | 50.97 |
TiO2 | 0.46 | 0.48 | 0.44 | 0.44 | 0.49 | 0.54 | 0.47 | 0.16 | 0.52 | 0.47 | 0.48 | 0.51 |
Al2O3 | 26.58 | 26.22 | 25.11 | 24.85 | 24.20 | 24.76 | 25.19 | 29.65 | 26.31 | 24.73 | 24.62 | 24.93 |
Cr2O3 | 0.01 | 0.00 | 0.03 | 0.00 | 0.00 | 0.01 | 0.00 | 0.01 | 0.00 | 0.02 | 0.00 | 0.00 |
FeO | 3.87 | 3.83 | 3.70 | 3.94 | 3.50 | 3.53 | 3.71 | 3.61 | 3.89 | 3.73 | 3.94 | 3.76 |
MnO | 0.00 | 0.00 | 0.00 | 0.02 | 0.04 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.01 | 0.00 |
MgO | 3.52 | 3.54 | 3.65 | 3.71 | 4.30 | 4.04 | 3.90 | 2.30 | 3.70 | 4.04 | 3.85 | 3.82 |
CaO | 0.10 | 0.06 | 0.03 | 0.03 | 0.00 | 0.01 | 0.06 | 0.04 | 0.05 | 0.02 | 0.05 | 0.01 |
Na2O | 0.32 | 0.24 | 0.22 | 0.33 | 0.09 | 0.09 | 0.21 | 0.61 | 0.37 | 0.11 | 0.17 | 0.19 |
K2O | 10.98 | 11.25 | 10.99 | 11.03 | 11.55 | 11.73 | 11.34 | 10.10 | 10.63 | 11.39 | 10.74 | 11.20 |
Total | 95.82 | 95.60 | 95.15 | 95.29 | 95.35 | 95.81 | 95.98 | 96.61 | 95.64 | 95.37 | 95.22 | 95.39 |
Si | 3.39 | 3.40 | 3.44 | 3.44 | 3.46 | 3.44 | 3.43 | 3.31 | 3.37 | 3.44 | 3.46 | 3.44 |
AlIV | 0.61 | 0.60 | 0.56 | 0.56 | 0.54 | 0.56 | 0.57 | 0.69 | 0.63 | 0.56 | 0.54 | 0.56 |
AlVI | 1.47 | 1.46 | 1.44 | 1.42 | 1.39 | 1.41 | 1.42 | 1.62 | 1.46 | 1.41 | 1.42 | 1.42 |
Ti | 0.02 | 0.02 | 0.02 | 0.02 | 0.03 | 0.03 | 0.02 | 0.01 | 0.03 | 0.02 | 0.02 | 0.03 |
Fe3+ | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Fe2+ | 0.21 | 0.21 | 0.21 | 0.22 | 0.20 | 0.20 | 0.21 | 0.20 | 0.22 | 0.21 | 0.22 | 0.21 |
Cr | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Mn | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Mg | 0.35 | 0.35 | 0.37 | 0.37 | 0.43 | 0.41 | 0.39 | 0.23 | 0.37 | 0.41 | 0.39 | 0.39 |
Ca | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Na | 0.04 | 0.03 | 0.03 | 0.04 | 0.01 | 0.01 | 0.03 | 0.08 | 0.05 | 0.01 | 0.02 | 0.03 |
K | 0.93 | 0.96 | 0.95 | 0.95 | 1.00 | 1.01 | 0.97 | 0.85 | 0.91 | 0.98 | 0.93 | 0.97 |