Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-08T10:28:46.604Z Has data issue: false hasContentIssue false
  • English
  • Français

Mineralogy of vesicles in an olivine leucitite at Cosgrove, Victoria, Australia

Published online by Cambridge University Press:  05 July 2018

W. D. Birch
W. D. Birch*
Affiliation:
Department of Mineralogy, National Museum of Victoria, Russell Street, Melbourne, Victoria. 3000
Get access Rights & Permissions [Opens in a new window]

Summary

An olivine-titanomagnetite-apatite-clinopyroxene-mica-nepheline-feldspar assemblage occurs in late-stage vesicles in a small outcrop of olivine leucitite at Cosgrove, Victoria. The vesicles were formed by exsolution of volatiles at an early stage in the cooling history of the lava. Subsequently, a volatile-rich residual liquid filled cavities and fractures, giving rise to a coarse-grained pegmatoid rock type similar in over-all mineralogy to the vesicles. The volatiles facilitating crystallization in both the vesicles and the pegmatoid were probably enriched in F, CO2, and P. A number of geothermometers applied to the vesicle assemblage failed to agree on likely crystallization temperatures.

Type
Research Article
Information
Mineralogical Magazine , Volume 43 , Issue 329 , March 1980 , pp. 597 - 603
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1980

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

Birch, (W. D.), 1976. J. geol. Soc. Aust. 23, 435-7.CrossRefGoogle Scholar
Birch, (W. D.) 1978. Ibid. 25 (7), 369-85.Google Scholar
Carmichael, (I. S. E.), Turner, (F. J.), and Verhoogen, (J.), 1974. Igneous Petrology, McGraw-Hill.Google Scholar
Cundari, (A.), 1973. J. geol. Soc. Aust. 20, 465-92.CrossRefGoogle Scholar
Fuge, (R.), 1977. Contrib. Mineral. Petrol. 61, 245-9.CrossRefGoogle Scholar
Hamilton, (D. L.), 1961. J. Geol. 69, 321-9.CrossRefGoogle Scholar
Kilinc, (I. A.) and Burnham, (C. W.), 1972. Econ. Geol. 67, 231-5.CrossRefGoogle Scholar
Kogarko, (L. N.), 1974. Role of Volatiles, in Sørenson, H. (ed.), The Alkaline Rocks, 47487, Wiley, London.Google Scholar
McKenzie, (D. E.) and White, (A. J. R.), 1970. Lithos. 3, 309-17.CrossRefGoogle Scholar
Nash, (W. P.), 1972. Am. Mineral. 57, 877-86.Google Scholar
Perchuk, (L. L.) and Ryabchikov, (I. D.), 1968. J. Petrol. 9, 123-67.CrossRefGoogle Scholar
Powell, (M.) and Powell, (R.), 1977. Mineral. Mag. 41, 253-6.CrossRefGoogle Scholar
Stormer, (J. C.) and Carmichael, (I. S. E.), 1971. Contrib. Mineral. Petrol. 31, 121–31.CrossRefGoogle Scholar