One of our fellow shell collectors (Ms. Rusti Stover) who is also a Psamophile (sand collector) sent me this to pass on to you all. Some sands will actually “sing”, or make noise. Often referred to as “singing” or “booming” sand, this rare sand produces a tone when walked on or blown in the wind. Some sands will even create sparks of light at night when walked on or driven across. The sand’s sound waves are caused by the friction between the grains of this sand’s unique crystalline structure. Singing sands are becoming harder and harder to find as modern pollution tends to coat the sand particles and destroy its ability to produce sound. At the time of writing this, singing sand can still be found on every continent of the world. …Internet source re sand info, from about 4 years ago. ---------------------------------------------------------------------- [log in to unmask] - a forum for informal discussions on molluscs To leave this list, click on the following web link: http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1 Type your email address and name in the appropriate box and click leave the list. ----------------------------------------------------------------------