Hand Sample: Aphanitic dark gray vesicular basalt. Sample contains numerous vesicles ranging in size from less than 0.05cm to 1.5cm. Individual olivine crystals can also be found throughout the sample.
Thin Section: Groundmass of medium size plagioclase, pyroxenes, and olivine. Vesicles are numerous throughout the sample.
Sample collected in January, 1969.
Is Part Of
Volcanic Phenomena Suite - The Hawaiian Islands of Hawaii and Oahu