Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-27T08:21:16.645Z Has data issue: false hasContentIssue false
  • English
  • Français

Spinels from the Dawros Peridotite, Connemara, Ireland

Published online by Cambridge University Press:  05 July 2018

A. T. V. Rothstein
A. T. V. Rothstein*
Affiliation:
Department of Chemistry and Geology, Portsmouth Polytechnic, Portsmouth PO1 3QL
Get access Rights & Permissions [Opens in a new window]

Summary

Two different spinels, analyses of which are given, occur in the layered ultramafic rocks at Dawros. Chrome spinel occurs both as gravity-stratified cumulates and as complex orbs, while an Al-rich spinel is both in rocks of the main Dawros magmatic sequence and in an association with an aluminous bronzite, which may originate by recrystallization. It is concluded that while the chrome spinel is certainly of magmatic origin, the aluminous spinel is probably partly of magmatic and partly of recrystallization origin.

Type
Research Article
Information
Mineralogical Magazine , Volume 38 , Issue 300 , December 1972 , pp. 957 - 960
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1972

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

Green, (D. H.), 1964. Journ. Petrology 5, 134.CrossRefGoogle Scholar
Henderson, (P.), and Suddaby, (P.), 1971. Contr. Min. Petr. 33, 21.CrossRefGoogle Scholar
Irvine, (T. N.), 1967. Canad. Journ. Earth Sci. 4, 71.CrossRefGoogle Scholar
Loney, (R. A.), Himmelberg, (G. R.), and Coleman, (R. G.), 1971. Journ. Petrology 12, 245.CrossRefGoogle Scholar
Rothstein, (A. T. V.), 1957. Quart. Journ. Geol Soc. 113, 1.CrossRefGoogle Scholar
Rothstein, (A. T. V.) 1958. Geol. Mag. 95, 456.CrossRefGoogle Scholar
Rothstein, (A. T. V.) 1962. Magmatic facies in ultrabasic igneous rocks of the tholeiitic series. Acad. Sci. USSR [MA.I8-288].Google Scholar
Thayer, (T. P.), 1969. Econ. Geol. Monograph 4 (magmatic ore deposits), 132.Google Scholar