Hand Sample Missing
Thin Section Missing

Foid-Bearing Gabbro

IUGS Definition ( QAPF Chart )

Foid-Bearing Gabbro: “A collective term for gabbros containing small amounts of feldspathoids (less than 10% of the felsic minerals).”
Photos
Chemistry
Typical Minerals
  • calcic plagioclase: labradorite or bytownite
  • clinopyroxene: augite or diopside
  • feldspathoids
  • accessory minerals: olivine and orthopyroxene