Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-06T07:02:24.270Z Has data issue: false hasContentIssue false
  • English
  • Français

Trachytes and their feldspar phenocrysts

Published online by Cambridge University Press:  14 March 2018

I. S. E. Carmicrael
I. S. E. Carmicrael*
Affiliation:
Department of Geology, Imperial College of Science, London, S.W. 7
Get access Rights & Permissions [Opens in a new window]

Summary

The compositions of the groundmass and of the plagioclase and sanidine phenocrysts of a series of over- and under-saturated trachytes indicate that plagioclase will precipitate at some stage in the crystallization interval of all calcium-bearing potassic trachytes. Using this data obtained from natural salic liquids, a concept of crystallization within the system CaA2Si2O8-NaAlSiO4-KAlSiO4-SiO2 may be obtained.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 34 , Issue 268 , 1965 , pp. 107 - 125
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1965

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

Bowen, (N.L.), 1945. Amer. Journ. Sci., vol. 243A, Daly volume, p. 75.Google Scholar
Carmichael, (I. S. E.), 1963a. Quart. Journ. Geol. Soc., vol. 119, p. 95.Google Scholar
Carmichael, (I. S. E.), 1963. Min. Mag., vol. 33, p. 394.Google Scholar
Carmichael, (I. S. E.), 1964. (In press.)Google Scholar
Carstens, (H.), 1961. Norsk Polarinst. Skrifter, vol. 121 (M.A. 15-551).Google Scholar
Chayes, (F.), 1963. Journ. Geophys. Res., vol. 68, p. 1519.Google Scholar
Hamilton, (D.L.) and Mackenzln, (W.S.), 1965. This volume, p. 214.Google Scholar
Le Maitre, (R.W.), 1962. Bull. Geol. Soc. Amer., vol. 73, p. 1309.Google Scholar
Roedder, (E.), 1959. Silicate melt systems; in Physics and Chemistry of the Earth, vol. 3. Pergamon Press.Google Scholar
Schairer, (J.F.) and Bowen (N. L.), 1947. Bull. Comm. Geol. Finl., vol. 20, p. 67.Google Scholar
Sobolev, (V.S.), 1959. Mineralog. Sbornik, L'vov Geol. Obsch., no. 13, p. 126. (Translated by )5. Fleischer.)Google Scholar
Smith, (J.V.) and Mackenzie, (W.S.), 1958. Amer. Min., vol. 43, p. 872.Google Scholar
Tuttle, (O.F.) and Bown, (N.L.), 1958. Geol. Soc. Amer., Memoir 74.Google Scholar