Sample from Ukinrek Maars, Alaska Peninsula. Contains common plagioclase to 0.5 mm, clinopyroxene to 0.5 mm, abundant olivine to 2 mm, and uncommon chromian spinel. Clinopyroxene sparse. Some olivine in clusters.
Rear-arc vs. arc-front volcanoes in the Katmai reach of the Alaska Peninsula: a critical apprasial of across-arc compositional variation