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2010-11-21

Cave of Giant Crystals, Mexico



The crystals in the cave are made of selenite, a form of the common mineral gysum.  Slelenite is translucent & soft.  Research carried out by the scientist through uranium-thorium dating suggests the larget crystals are about 600 000 years old.

For more details, visit http://www.crystalinks.com/mexicocrystals.html

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