![](https://upload.wikimedia.org/wikipedia/commons/thumb/8/88/Na-bl.jpg/220px-Na-bl.jpg)
![](https://upload.wikimedia.org/wikipedia/commons/thumb/2/2d/One_cannot_conquer_alone.jpg/220px-One_cannot_conquer_alone.jpg)
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]External links
[edit]- Foidolite (at University of Manitoba) - Retrieved 2009-05-15