Light gray crystal-rich dome ; Volcanic bomb from the 2017-2018 tuff ring; Dense non-vesicular block with light gray crystalline groundmass and 15% hornblende to 5 mm, 10% plagioclase to 2 mm. 1 cm coarse gabbroic hornblende/plagioclase/pyroxene inclusion
Petrology of the 2016-2017 eruption of Bogoslof Island, Alaska
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