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Photographic gallery.  Thousands of particles under the microscope.
Sand, Grand Turk Beach Through the Microscope

Sand, Grand Turk Beach

The clear grain on the left is a quartz grain. The three armed grain is a calcium carbonate sponge spicule. The other grains are coral fragments or eroded foraminifera tests.

Transmitted Brightfield and Reflected Darkfield Illumination


Significance in the Environment:

Characteristic Features:

Associated Particles:


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.)