Alkalic Olivine Basalt

Title

Alkalic Olivine Basalt

Identifier

HA-10

Description

Hand Sample: Aphanitic, light gray alkalic olivine basalt. Sample contains abundant feldspar phenocrysts ranging in diameter from 0.1cm to 0.9cm in length. Phenocrysts are generally blocky in shape. Occasional vesicles throughout sample ranging in diameter from 0.05cm to 0.3cm.
Thin Section: Groundmass of plagioclase grains. Large plagioclase and feldspar phenocrysts are abundant throughout sample. Some vesicles present in thin section.

Date

Sample collected January, 1969

Contributor

Western Minerals

Is Part Of

Volcanic Phenomena Suite - The Hawaiian Islands of Hawaii and Oahu

Spatial Coverage

Kohala Mt. - Island of Hawaii
Sample collected 0.9miles East of Puu o Kawaiwai on road from Kamuola to Hawi.