Sample from Iron Trig cone. Contains abundant plagioclase to 1 mm, clinopyroxene to 1 mm, uncommon olivine to 1 mm, and rare magnetite. Varied plagioclase zoned and sieved. Iddingsite rims on olivine.
Rear-arc vs. arc-front volcanoes in the Katmai reach of the Alaska Peninsula: a critical apprasial of across-arc compositional variation