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Photographic gallery.  Thousands of particles under the microscope.
Sand, Wiapio Beach, Hawaii, Hawaii Under the Microscope

Sand, Wiapio Beach, Hawaii, Hawaii

These are another random set of grains from this sample. Magnetite inclusions dominate some of the grains. The next few images will show the two lighter olivine grains with different types of illumination. The boundary of the two central grains shows low relief, indicating a refractive index near that of the mounting medium, 1.680.

Transmitted Oblique Illumination with a Single Linear Polarizing Filter


Significance in the Environment:

Characteristic Features:

Associated Particles:


Deer, W.A., R.A. Howie, and J. Zussman, AN INTRODUCTION TO THE ROCK-FORMING MINERALS, Longman Scientific & Technical, 1992.

Greenberg, Gary, A GRAIN OF SAND: NATURE'S SECRET WONDER, Voyageur Press, 2008.

Welland, Michael, SAND: THE NEVER ENDING STORY, University of California Press, 2009.
(Good Information on the microscopy of sand, Great site for more information on microscopy in general)
(Good Information on Sand with links to more information on sand),com_mediadb/task,play/idstr,Open-feeds_fsc_exploring_sedimentary_processes_fsc02_02_m4v/vv,-2/Itemid,97
(Brief, very informative video on what can be learned from the shape of a sand grain.)