Common Phases for the TCOX Database
The following lists common phase names and the corresponding Thermo‑Calc database phase names for some key oxides.
Name in the Database | Common Name and Description |
---|---|
CORUNDUM |
Corundum (Al2O3), Eskolaite (Cr2O3), Hematite (Fe2O3), Karelianite (V2O3), Tistarite (Ti2O3), CoTiO3, Ilmenite (FeTiO3), Geikielite (MgTiO3), Pyrophanite (MnTiO3), NiTiO3. The ilmenite ((Co,Fe,Mg,Mn,Ni)TiO3) crystal structure consists of an ordered derivative of the corundum structure. In corundum all cations are identical, but in ilmenite Me+2 and Ti+4 occupy different sublattices. Both the disordered and ordered end-members are described in the CORUNDUM phase in the database. Anti-site occupancy in the ilmenite structure is not modeled. |
HALITE |
Lime (CaO), CoO, Wustite (FeO), Periclase (MgO), Manganosite (MnO), Bunsenite (NiO), Baria (BaO). |
ALABANDITE |
Alabandite (MnS), Oldhamite (CaS), MgS, GdS, LaS, ZrS, BaS. |
GARNET |
Grossular (Ca3Al2(SiO4)3), Uvarovite (Ca3Cr2(SiO4)3), Spessartine (Mn3Al2(SiO4)3), Goldmanite (Ca3V3(SiO4)3). Other minerals part of the Garnet structure, such as Pyrope and Almandine, are not part of the database since they are not stable at ambient pressure. Included in the GARNET model are also the (Gd,Y,Yb)3(Al,Fe)5O12 descriptions. |
M2O3A |
This is the hexagonal La2O3 and Gd2O3 modifications. |
M2O3B |
This is monoclinic Gd2O3. |
M2O3C |
This is Bixbyite (Mn2O3) and cubic Gd2O3 , Y2O3 and Yb2O3. |
M2O3H |
This is hexagonal La2O3, Gd2O3, Y2O3 and Yb2O3. |
M2O3X |
This is x-La2O3 and high-temperature cubic Gd2O3. |
MELILITE |
Gehlenite (Ca2Al2SiO7), Fe-Gehlenite (Ca2Fe2SiO7), Åkermanite (Ca2MgSi2O7), Fe-Åkermanite (Ca2FeSi2O7), CaCoSi2O7, Bennesherite (Ba2FeSi2O7), and Ba2MgSi2O7. |
OLIVINE |
Calcio-olivine (Ca2SiO4), Co2SiO4, Fayalite (Fe2SiO4), Forsterite (Mg2SiO4), Tephroite (Mn2SiO4), Ni2SiO4, Kirschsteinite (CaFeSiO4), Monitcellite (CaMgSiO4), Glaucochroite (CaMnSiO4), Liebenbergite (Ni2SiO4) |
PSEUDO_BROOKITE |
Pseudobrookite (Fe2TiO5), Karrooite (MgTi2O5), Ti3O5, Al2TiO5, CoTi2O5, Armalcolite ((Fe,Mg)Ti2O5), MnTi2O5. |
LOWCLINO_PYROXENE |
Low clino-enstatite (MgSiO3), low clino-diopside (CaMgSi2O6). |
CLINO_PYROXENE |
Clino-enstatite (MgSiO3), clino-ferrosilite (FeSiO3), diopside (CaMgSi2O6), Niopside (CaNiSi2O6), Pigeonite ((Mg,Fe,Ca)Si2O6), Hedenbergite (CaFeSi2O6). |
ORTHO_PYROXENE |
Enstatite (MgSiO3), ortho-Diopside (CaMgSi2O6). |
PROTO_PYROXENE |
Proto-enstatite (MgSiO3), proto-diopside (CaMgSi2O6). |
PYRRHOTITE |
Pyrrhoitite (FeS), CoS, CrS, NbS, NiS, TiS, VS. |
RUTILE |
Rutile (TiO2), Pyrolusite (MnO2), high-temperature VO2. |
ALPHA_SPINEL |
Tetragonal Hausmannite (Mn3O4). |
SPINEL |
The cubic AB2O4-type spinel. Many end-members, solid solutions and combinations are described in the SPINEL phase: Magnetite (Fe3O4), cubic Hausmannite (Mn3O4), Guite (Co3O4), Spinel (MgAl2O4), Cuprospinel (CrFe2O4), Chromite (FeCr2O4), Hercynite (FeAl2O4), Coulsonite (FeV2O4), Vuorelainenite (MnV2O4), Magnesiocoulsonite (MgV2O4), CoV2O4, NiV2O4, Galaxite (MnAl2O4), Jacobsite (MnFe2O4), Magnesiochromite (MgCr2O4), Magnesioferrite (MgFe2O4), Manganochromite (MnCr2O4), Thermaerogenite (CuAl2O4), Ulvöspinel (TiFe2O4), Trevorite (NiFe2O4), NiAl2O4, CoAl2O4, CoFe2O4, FeCo2O4, CoMn2O4, CuMn2O4, MgMn2O4, NiMn2O4, Co2TiO4, Mg2TiO4, MgTi2O4, MnTi2O4, Mn2TiO4, Ni2TiO4, LiAl5O8, LiFe5O8, LiMn2O4, Li4Mn5O12, and Li4Ti5O12. |
ZIRCON |
Zircon (ZrSiO4), Xenotime (YPO4), GdPO4, LaPO4, HfSiO4. |