Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-26T20:51:54.456Z Has data issue: false hasContentIssue false
  • English
  • Français

Hercynite as a breakdown product of staurolite from within the aureole of the Ardara Pluton, Co. Donegal, Eire

Published online by Cambridge University Press:  05 July 2018

Brian P. Atkin
Brian P. Atkin*
Affiliation:
Department of Geology, University of Nottingham, University Park, Nottingham NG7 2RD
Get access Rights & Permissions [Opens in a new window]

Summary

Zincian hercynite is present in pelites within the aureole of the Ardara Pluton. The hercynite is always surrounded by cordierite, garnet, or feldspar and is never in contact with quartz. From textural and chemical evidence it is apparent that the hercynite is produced by the reaction of zincian staurolite → zincian hercynite + cordierite + sillimanite. A temperature of about 725°C at pressure of about 2·6 kb and anφo2 below that defined by the Q.F.M. buffer is postulated for this reaction.

Type
Research Article
Information
Mineralogical Magazine , Volume 42 , Issue 322 , June 1978 , pp. 237 - 239
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1978

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Ashworth, (J. R.), (1975). Contrib. Mineral. Petrol. 53, 281-91.CrossRefGoogle Scholar
Atherton, (M. P.), Naggar, (M. H.), and Pitcher, (W. S.), 1975. Am. J. Sci. 275, 432-43.CrossRefGoogle Scholar
French, (B. M.) and Eugster, (H. P.), 1968. J. Geophys. Res. 70, 1529-39.CrossRefGoogle Scholar
Friedman, (G. M.), 1954. J. Geol. 62, 336-74.CrossRefGoogle Scholar
Guidotti, (C. V.), 1970. J. Petrol. 11, 277-336.CrossRefGoogle Scholar
Holdaway, (M. J.), 1971 Am. J. Sci. 271, 97–131.CrossRefGoogle Scholar
Hollister, (L. S.), 1969. Ibid. 267, 352-70.CrossRefGoogle Scholar
Okrusch, (M.), 1969. Contrib. Mineral. Petrol. 22, 32–72.CrossRefGoogle Scholar
Propac, (G.), 1971. Neues Jahrb. Mineral. Abhdl. 115, 120-2.Google Scholar
Richardson, (S. W.), 1968. J. Petrol. 9, 467-88.CrossRefGoogle Scholar
Smellie, (J. A. T.), 1974. Mineral Mag. 39, 878-88.CrossRefGoogle Scholar
Tilley, (C. E.), 1921, Geol. Mag. 8, 305-12.CrossRefGoogle Scholar
Tilley, (C. E.), 1924. Q. J. Geol. Soc. 80, 22-71.CrossRefGoogle Scholar
Turnock, (A. C.) and Eugster, (H. P.), 1962. J. Petrol. 3, 533-65.CrossRefGoogle Scholar