Quartz Monzonite Hand Sample
Quartz Monzonite Thin Section

Quartz Monzonite

IUGS Definition ( QAPF Chart ) ( QAP Chart )

Quartz Monzonite: "A plutonic rock consisting of aproximately equal amounts of alkali feldspar and plagioclase and with essential quartz (5%-20% of felsic minerals) but not enough to make the rock a granite."
Photos
Typical Minerals
  • alkali feldspar
  • plagioclase feldspar
  • quartz
  • hornblende and/or biotite
  • augite
  • zircon, magnetite, ilmenite, apatite