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Photographic gallery.  Thousands of particles under the microscope.
Beach at Makauwahi Cave, Kauai, Hawaii

Beach at Makauwahi Cave, Kauai, Hawaii

This is volcanic glass collected from a strandline on the beach near Makauwahi Cave. When this sand is passed through a #100 US sieve the grains with a higher density (grams/cc) dominate.

Transmitted Off Crossed Circular Polarized Light and Darkfield Reflected Illumination


Significance in the Environment:

Characteristic Features:

Associated Particles:


Blay, Chuck and Robert Siemers, KAUAI'S GEOLOGIC HISTORY, A SIMPLIFIED GUIDE, TEOK Investigations, 2004 (ISBN 0-9744723-0-1)