Phases reported to exist in the MnO-SiO2-Al2O3 system
Name Chemical formula Stoichiometric composition, wt. %
Corundum Al2O3 100% Al2O3
Cristobalite SiO2 100% SiO2
Tridymite SiO2 100% SiO2
Quartz SiO2 100% SiO2
Manganosite MnO 100% MnO
Galaxite MnO x Al2O3 41% MnO, 59% Al2O3
Mullite 3Al2O3 x 2SiO2 28% SiO2, 72% Al2O3
Rhodonite MnO x SiO2 54% MnO, 46% SiO2
Tephroite 2MnO x SiO2 70% MnO, 30% SiO2
Spessartite 3MnO x Al2O3, 3SiO2 43$ MnO, 36% SiO2, 21% Al2O3
Mn-anorthite MnO x Al2O3 x 2SiO2 24% MnO, 41% SiO2, 35% Al2O3
Mn-cordierite 2MnO x 2Al2O3 x 5SiO2 22% MnO, 46% SiO2, 32% Al2O3



















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