Monzonite Hand Sample
Thin Section Missing

Monzonite

IUGS Definition ( QAPF Chart )

Monzonite: “There has been considerable divergence in the use of the term due to the variety of rock types found in the Monzoni district but it is now commonly used for a plutonic rock containing almost equal amounts of plagioclase and alkali feldspar with minor amphibole and/or pyroxene.”
Photos
Typical Minerals
  • alkali feldspar
  • intermediate plagioclase
  • hornblende
  • biotite
  • quartz
  • magnetite
  • accessory minerals: apatite, ilmenite