Title
Alkalic Olivine Basalt
Identifier
HA-21
Description
Hand Sample: Aphanitic light gray vesicular basalt with large olivine crystals. Olivine phenocrysts range in size from single crystals approx. 0.1cm in diameter to clusters of olivine as large as 1cm in diameter. Vesicles throughout the sample are primarily large and also elongate in shape.
Thin Section: Groundmass composed of small sized plagioclase grains, glass, and clinopyroxene. Some small phenocrysts of olivine present throughout the thin section.
Date
Sample collected in January, 1969.
Contributor
Western Minerals
Is Part Of
Volcanic Phenomena Suite - The Hawaiian Islands of Hawaii and Oahu
Spatial Coverage
Hualaiai - Island of Hawaii
Temporal Coverage
1801
Number of Thin Sections
1