http://inspire.ec.europa.eu/codelist/LithologyValue/phonoliteINSPIRE Registry teamJRC-INSPIRE-SUPPORT@ec.europa.euhttp://inspire.ec.europa.eu/registry2015-08-18 18:04 PM CEST2015-08-18 18:04 PM CESTphonolitePhonolitoid in which the plagioclase to total feldspar ratio is less than 0.1. Rock consists of alkali feldspar, feldspathoid minerals, and mafic minerals.