Mindat Description
Mafites tentatively identified as phonolite, with felsics comprising 10-60% foids and alkali feldspar/total feldspar >0
Geoscience Ontology Description
Fine grained igneous rock than contains less than 90 percent mafic minerals, between 10 and 60 percent feldspathoid mineral in the QAPF fraction and has a plagioclase to total feldspar ratio less than 0.5. Includes rocks defined modally in QAPF fields 11 and 12, and TAS field Ph.