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Melilite crystallization in the system CaO-MgO-Al2O3-SiO2

Published online by Cambridge University Press:  05 July 2018

G. M. Biggar  and
M. J. O'Hara
G. M. Biggar
Affiliation:
Grant Institute of Geology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JW
M. J. O'Hara
Affiliation:
Grant Institute of Geology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JW
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Summary

The solidus temperatures (IPTS-68) and melilite compositions (mole %) determined for some four-phase assemblages in the system CaO-MgO-Al2O3-SiO2 are: anorthite, diopside, spinel melilite (Åk81Geh19), 1236·5 °C; diopside, spinel, forsterite, melilite (Åk83Geh17), 1238 °C; foresterite, spinel, monticellite, melilite (Åk82Geh18), 1351 °C; monticellite, merwinite, spinel, melilite (Åk52Geh48), 1378 °C; dicalcium-silicate, Ca5MgSi3O12, spinel, melilite (Åk5Geh95), ca. 1412 °C; dicalcium-silicate, Ca6MgAl8SiO21, spinel, melilite (Åk4Geh96), ca. 1347 °C.

Type
Research Article
Information
Mineralogical Magazine , Volume 38 , Issue 300 , December 1972 , pp. 918 - 925
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1972

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References

Biggar, (G. M.), 1969. Progress in Experimental Petrology, First Report. Natural Environment Research Council.Google Scholar
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Biggar, (G. M.) and O'Hara, (M. J.), 1969a. Ibid. 37, 1–15.Google Scholar
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O'Hara, (M. J.) and Biggar, (G. M.), 1969a. Amer. Journ. ScL, Schairer VoL 267A, 364-90.Google Scholar
O'Hara, (M. J.) 1969b. Progress in Experimental Petrology, First Report. Natural Environment Research Council.Google Scholar