Foidolite
From Infogalactic: the planetary knowledge core
File:Na-bl.jpg
Foidolite (sodalitolite variety) from Namibia
Foidolite /ˈfɔɪdəlaɪt/ is a rare coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%. 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
External links
- Foidolite (at University of Manitoba) - Retrieved 2009-05-15
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