Basaltic Spatter

Basaltic Spatter

HA-4

Hand Sample: On cut face, aphanitic, gray basalt with light colored phaneritic crystals (~0.1 cm in size). Subparallel fractures noted across sample. Exterior of sample has been heavily weathered, resulting in the red and orange discoloration.

Thin Section: Groundmass of aphanitic plagioclase. Some larger plagioclase grains are found throughout the sample in addition to some olivine phenocrysts. Vesicles are present throughout sample.

Sample collected January, 1969

Western Minerals

Volcanic Phenomena Suite - The Hawaiian Islands of Hawaii and Oahu

Kileau Volcano - Island of Hawaii
Collected a few feet below the top of the cone near Kapoho, Kileau.

1960