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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 sand collected from a strandline on the beach near Makauwahi Cave. When this sand is passed through a #100 US sieve the magnetite crystals dominate. These are crystals that grew in the magma and were freed by erosion over time. The scale on the left is marked in millimeters.

Macro Photograph


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)