phonolite (Q41856)

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Revision as of 13:59, 24 October 2023 by Sky (talk | contribs) (‎Changed label, description and/or aliases in en, and other parts: Updated rock class item with Geoscience Ontology GSRM data)
Phonolitoid in which the plagioclase to total feldspar ratio is less than 0.1. Rock consists of alkali feldspar, feldspathoid minerals, and mafic minerals.
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phonolite
Phonolitoid in which the plagioclase to total feldspar ratio is less than 0.1. Rock consists of alkali feldspar, feldspathoid minerals, and mafic minerals.

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