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Hands On Mineral Identification helps you to identify over 14,500 minerals! By M. Darby Dyar, Ph.D. See our DVD collection.
Gypsum
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Windows to the Universe/L.Gardiner

Gypsum

This is gypsum! It often forms as a layer of the bottom of a salty sea. Sometimes it forms in sandy areas like deserts and little sand grains are trapped between the gypsum crystals. This makes the crystals look like they are made out of sand.

There is probably some gypsum in your house and school! Gypsum is in plaster, which is used to make walls and molds of your teeth at the orthodontist's office.

Last modified June 12, 2003 by Lisa Gardiner.

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TES XXVI, 3 fall 2010 The Fall 2010 issue of The Earth Scientist, focuses on rocks and minerals, including articles on minerals and mining, the use of minerals in society, and rare earth minerals, and includes 3 posters!

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