Is this xenolith an orthopyroxene-bearing troctolite or a plagioclase-bearing olivine websterite? 😭 I'll have to not forgot my loupe again when back in January.

Kaʻūpūlehu Flow Field, Hualālai Volcanics, Hualālai, Hawaiʻi

#xenolith #mafic #ultramafic #troctolite #websterite #geoscience #geology

In things that make me happy, a bit of the collection...Lawsonite blueschist, eclogitic blueschist, glaucophanite, various eclogites, orthopyroxenite, clinopyroxenite, garnet websterite

#eclogite #pyroxenite #blueschist #clinopyroxenite #websterite #garnet #metamorphic #geology #geoscience

Olivine websterite (?) xenolith
A recent study suggests a mantle origin for olivines in cumulate ultramafic xenoliths of Hualālai's Kaʻūpūlehu Flow Field.

#geoscience #geology #hualālai #volcanology #volcano #xenolith #xenolith #websterite #pyroxenite