Title
Nephelinite
Identifier
HA-29
Description
Hand Sample: Aphanitic medium gray nephlenite. White intergrowth crystals are common throughout the sample and form long strands (approx. 0.6 - 1cm in length) on sides of sample. Sample contains some melilite.
Thin Section: Groundmass is primarily glass and pyroxenes. Phenocrysts of pyroxenes and olivine are present throughout the sample.
Date
Sample collected in January, 1969.
Contributor
Western Minerals
Is Part Of
Volcanic Phenomena Suite - The Hawaiian Islands of Hawaii and Oahu
Spatial Coverage
University of Hawaii campus (Training School Flow), Honolulu - Island of Oahu
Number of Thin Sections
1