Tholeiitic Basalt

Title

Tholeiitic Basalt

Identifier

HA-17

Description

Hand Sample: Aphanitic dark gray vesicular basalt. The vesicles are uniform and common throughout the sample, with diameters of approx. 0.05 cm.
Thin Section: Groundmass consists of medium size plagioclase with small crystals of pyroxenes. The sample is uniform, with no large phenocrysts. Vesicles (~0.03mm) are present in sample.

Date

Sample collected January, 1969

Contributor

Western Minerals

Spatial Coverage

Northeast flank of Mauna Loa
Kaumana, Island of Hawaii

Temporal Coverage

1881

Number of Thin Sections

1

Geolocation