Determination of Iron Oxidation State in Omphacites Applied to Geothermometry of Sudetic Eclogites
Tóm tắt
A common mineral geothermometer for eclogites is based on Fe2+-Mg exchange reaction between garnets and clinopyroxenes. For the accurate determination of Fe2+ in omphacites, ten omphacite samples were isolated from eight Sudetic eclogites and studied by electron microprobe and Mössbauer spectroscopy. Garnet-clinopyroxene equilibration temperatures for two Sudetic eclogites were calculated.
Tài liệu tham khảo
N. Bakun-Czubarow, 29th IGC, Kyoto. 1992, Abstracts 2 of 3 (1992) 602
HK. Brueckner, JG. Medaris and N. Bakun-Czubarow, Neues Jahrbruch Miner.Abh. 163,2/3, (1991) 169–196
N. Bakun-Czubarow, Archiwum Mineralogiczne 48 (1992) 3–25
D. Canil, H.St.C. O'Neill, Journal of Petrology 37 (1996) 609–635
R. Powell, J. Metamorphic Geol. 3 (1985) 231–243
D.J. Ellis, D.H. Green, Contrib. Mineral. Petrol. 71 (1979) 13–22
L.P. Aldridge, G.M. Bancroft, M.E. Fleet and C.T. Herzberg, American Mineralogist 63 (1978) 1107–1115
J.M.D. Coey, Mössbauer spectroscopy of silicate minerals. In: Mössbauer Spectroscopy Applied to Inorganic Chemistry, vol. 1. ed. G.L. Long (Plenum Press, New York, 1984) pp. 443–509