Hematite-ilmenite (Fe(2)O(3)-FeTiO(3)) solid solutions: The effects of cation ordering on the thermodynamics of mixing

Hematite-ilmenite (Fe(2)O(3)-FeTiO(3)) solid solutions: The effects of cation ordering on the thermodynamics of mixing

Enthalpies of reaction from lead borate drop solution calorimetry at 1,057 K show that endothermic mixing dominates hematite-ilmenite solid solutions. Free energies of mixing were determined independently from the measured tie lines between nonstoichiometric spinel and the sesquioxide phase at 1,573...

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Veröffentlicht in:The American mineralogist 1994-06, Vol.79 (5-6), p.485
Hauptverfasser: Brown, Nancy E, Navrotsky, Alexandra
Format: Artikel
Sprache:eng
Schlagworte:
Calorimetry
Geology
Minerals
Thermodynamics
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Zusammenfassung:Enthalpies of reaction from lead borate drop solution calorimetry at 1,057 K show that endothermic mixing dominates hematite-ilmenite solid solutions. Free energies of mixing were determined independently from the measured tie lines between nonstoichiometric spinel and the sesquioxide phase at 1,573 K.
ISSN:0003-004X
1945-3027