Nephelinite

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

Geolocation