K-35 Hand Sample Photo
SI-10 XPL Thin Section Photo

Olivine Gabbronorite

IUGS Definition ( Ol Gabbroic Rocks )

Olivine Gabbronorite: “A collective term for plutonic rocks consisting of 10%-90% calcic plagioclase and accompanied by olivine, orthopyroxene, and clinopyroxene in various amounts.”
Photos
Typical Minerals
  • olivine
  • calcic plagioclase feldspar: anorthite, bytownite, labradorite
  • clinopyroxene: augite
  • orthopyroxene: enstatite to bronzite