skip to main content

Content language

PREFERRED TERM
phonolitoid  
TYPE
  • http://purl.org/net/provenance/ns#DataItem

DEFINITION
  • 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.
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.
IDENTIFIER
  • phonolitoid
TITLE
  • phonolitoid
URI
http://inspire.ec.europa.eu/codelist/LithologyValue/phonolitoid
Download this concept:
EQUIVALENT CONCEPTS