Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-23T04:01:51.915Z Has data issue: false hasContentIssue false
  • English
  • Français

Metamorphic pyroxenes from the Broken Hill district, New South Wales

Published online by Cambridge University Press:  14 March 2018

R. A. Binns
R. A. Binns*
Affiliation:
Department of Mineralogy and Petrology, University of Cambridge
Get access Rights & Permissions [Opens in a new window]

Summary

The Archean rocks of the Barrier Ranges, New South Wales, show zones of progressive regional metamorphism of which the highest is characterized by orthopyroxene-bearing basic granulites. Within this zone, further increase in metamorphic grade results in a detectable change in distribution of ferrous iron and magnesium between coexisting orthopyroxene and clinopyroxene, the latter becoming relatively richer in iron. Mutual solid solution between the two pyroxene phases also appears to increase. The value of coexisting pyroxenes as indicators of metamorphic grade is thus established. There are some points of disagreement between the Broken Hill results and previously advanced theories of cation distribution in pyroxenes.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 33 , Issue 259 , December 1962 , pp. 320 - 338
Copyright
Copyright © 1962, The Mineralogical Society

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

Bartholomé, (P.), 1961.Geol. Mag., vol. 98, p. 346.Google Scholar
Clavan, (W.), McNabb, (W.M.), and Watson, (E.H.), 1954.Amer. Min., vol. 39, o. 566.Google Scholar
Eskola, (P.), 1952. Amer. Journ. Sci., Bowen vol., p. 133.Google Scholar
Fyfe, (W.S.), Turner, (F.J.), and Verhoogen, (J.), 1958. Geol. Soc. Amer. Memoir 73.Google Scholar
Howie, (R A.), 1955.Trans. Roy. Soc. Edin., vol. 62, p. 725.Google Scholar
Howie, (R A.), 1958. Service G6ol. Congo Belge, Bull. 8, Fasc. 2.Google Scholar
King, (H.F.) and Thomson, (B.P.), 1953.rroe. Fifth Emp. Min. Met. Cong., vol. 1, p. 533.Google Scholar
Krank, (S.H.), 1961.Journ. Petr., vol. 2, p. 137.Google Scholar
Kretz, (R.), 1961.Journ. Geol., vol. 69, p. 361.Google Scholar
Mueller, ( R F.), 1960.Amer. Journ. Sei., vol. 258, p. 449.Google Scholar
Mueller, ( R F.), 1961.Geochimica Aeta, vol. 25, p. 267.Google Scholar
Muir, (L D.) and Tilley, (C.E.), 1958.Geol. Mag., vol. 95, p. 403.CrossRefGoogle Scholar
Norton, (D.A.) and Clavan, (W.S.), 1959.Amer. Min., vol. 44, p. 844.Google Scholar
O'Hara, (M.J.), 1960.Geol. Mag., vol. 97, p. 145.CrossRefGoogle Scholar
O'Hara, (M.J.), 1961.. Min. Mag., vol. 32, p. 848.Google Scholar
O'Hara, (M.J.), 1961.. Journ. Petr., vol. 2, p. 24.Google Scholar