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Foidolite
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Foidolite (/ˈfɔɪdəlaɪt/) is a rare phaneritic (coarse-grained) intrusive igneous rock in which more than 60% (by volume) of light-coloured minerals are feldspathoids.[1] Crystals of alkali feldspar, plagioclase, biotite, amphibole, pyroxene, and/or olivine may be present within the rock. The volcanic equivalents are termed foidite and phonolitic or tephritic foidites.
Some foidolites are a potential source of aluminium.
See also
[edit]References
[edit]- ^ Le Maitre, R.W., ed. (2002). Igneous Rocks — A Classification and Glossary of Terms (2nd ed.). Cambridge: Cambridge University Press. pp. 4, 22, 24, 82. ISBN 0-521-66215-X.
External links
[edit]- Foidolite (at University of Manitoba) - Retrieved 2009-05-15
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