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Foid syenitic rock
Broader Terms
BT
Phaneritic igneous rock
Scope note
Leucocratic, phaneritic crystalline rock composed of feldspathoids as 10-60 percent of the felsic minerals, alkali feldspar and mafic minerals. Includes rocks defined modally in QAPF field 11.
Bibliographic note
LeMaitre et al. 2002