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
Collected from highway
Temporal Coverage
1887
Number of Thin Sections
1