Clinkery aa

Title

Clinkery aa

Identifier

HA-15

Description

Hand Sample: Apahanitic, vesicular, dark gray-black basalt. Olivine crystals are scattered throughout the sample and are approx. 0.05cm in diameter. Vesicles are very predominant throughout the sample and range in diameter from 0.01 cm to 1.5 cm This sample displays characteristics of rough aa texture. The surface of the rock is dark red-brown likely due to weathering.
Thin Section: Aphanitic groundmass composed of mainly glass and microcrystals of clinopyroxene. Medium size, elongated, euhederal plagioclase crystals are present that display twinning.

Date

Sample collected January, 1969

Contributor

Western Minerals

Spatial Coverage

Southern edge of Mauna Loa - Island of Hawaii
Collected from highway

Temporal Coverage

1887

Number of Thin Sections

1

Geolocation