Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-24T01:44:32.831Z Has data issue: false hasContentIssue false
  • English
  • Français

Hollow apatites in a layered basic intrusion, Norway

Published online by Cambridge University Press:  01 May 2009

P. M. Gardner
P. M. Gardner
Affiliation:
Geologisk Institutt, Avd. A, Universitetet i Bergen, Norway
Get access Rights & Permissions [Opens in a new window]

Summary

Cumulate apatite crystals with infilled tube-like cavities parallel to the c-axis are described from a layered gabbro intrusion in Northern Norway. These are considered to be skeletal crystals produced by rapid growth in the supercooled roof zone of the magma chamber. At least two stages of growth are suggested on the basis of the morphology of the apatites. The interiors of the crystals contain phases representing the trapped magma or the cumulus mineral phase within which they are enclosed. Recirculation of the apatite primocrysts by convection currents is indicated by the interrupted form of some of the tubes.

Type
Articles
Information
Geological Magazine , Volume 109 , Issue 5 , September 1972 , pp. 385 - 392
Copyright
Copyright © Cambridge University Press 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

Barth, T. F. W. 1953. The layered gabbro series at Seiland, Northern Norway. Norg. geol. Unders. 184, 191–234.Google Scholar
Capdevilla, R. 1967. Répartition et habitus de l'apatite dans le granite de Neira (Espagne), comparaisons avec des données expérimentales et applications petrogénétiques. Acad. Sci. Sér. D. 1264, 1694.Google Scholar
Cox, K. G., Johnson, R. L., Monkman, L. J., Stillman, C. J., Vail, J. R. & Wood, D. N. 1966. The Geology of the Nuanetsi Igneous Province. Phil. Trans. R. Soc. Lond. A257, 71–218.Google Scholar
Currie, J. B. (1951). The Occurrence and Relationships of some Mica and Apatite Deposits in Southeastern Ontario. Econ. Geol. 46, 765.CrossRefGoogle Scholar
Heinrich, E. Wm. 1966. The Geology of Carbonatites. 555 pp. Macnally.Google Scholar
Morse, S. A. 1969. The Kiglapait Layered Intrusion, Labrador. Mem. geol. Soc. Am. 112.Google Scholar
Saratovkin, D. D. 1959. Dendritic Crystallisation. Translated from Russian by Bradley, J. E. S.. 126 pp. Consultants Bureau Inc., New York.Google Scholar
Spry, A. 1969. Metamorphic Textures. 350 pp. Pergamon.Google Scholar
Stumpfl, E. & Sturt, B. A. 1965. A preliminary account of the geochemistry and ore mineral parageneses of some Caledonian basic igneous rocks from Sørøy, Northern Norway. Norg. geol. Unders. 234, 196–230.Google Scholar
Sturt, B. A. 1970. Exsolution during metamorphism with particular reference to feldspar solid solutions. Mineralog. Mag. 37, 815–32.CrossRefGoogle Scholar
Wager, L. R. & Brown, G. M. 1968. Layered Igneous Rocks, 588 pp. Oliver & Boyd, Edinburgh.Google Scholar
Wyllie, P. J., Cox, K. G. & Biggar, G. M. 1962. The Habit of Apatite in Synthetic Systems and Igneous Rocks. J. Petrology 3, 238–243.CrossRefGoogle Scholar