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A fine to medium grained, extrusive or hypabyssal igneous rock consisting mainly of analcime and pyroxene (usually titanaugite). Other feldspathoids, plagioclase, and/or olivine may be present. Apatite, sphene, and opaque oxides may be present as accessories. On the QAPF diagram, it is a foidite consisting of >90% feldspathoids, mostly analcime, with <10% mafic minerals.
Classification of AnalcimiteHide
Sub-divisions of AnalcimiteHide
Mineralogy of AnalcimiteHide
Essential minerals - these are minerals that are required within the classification of this rock:
|Analcime||Na(AlSi2O6) · H2O|
Non-essential minerals - these minerals are common, sometimes major components, but are not always present: