Guest guest Posted October 23, 2001 Report Share Posted October 23, 2001 Teaching my daughter about our rocks and crystals and how they are formed, we are doing this. I thought I'd share. Geodes are limestone rocks with quartz crystals growing in their center....ordinary on the outside, spectacular on the inside. Ingredients: waterborax* (Mule Team 99 is one brand) clean egg shells halves egg carton waxed paper Directions: 1. Create a super-saturated solution of borax and water -- fill a jar with boiling water then add borax one tablespoon at a time until no more will dissolve. This will be about three tablespoons per cup of boiling water. 2. Place small pieces of waxed paper in the egg carton sections. 3. Set the clean egg shell halves in the carton on top of the waxed paper. 4. Pour a small amount of the super-saturated borax solution into the egg shell halves. 5. In a few days, or less, crystals will form inside the shell. *You can use other solids to make super-saturated solutions with. The ones that I've used are: table salt, rock salt, sugar, baking soda, and Epsom salts. Each of these will create a different looking crystal and will require a different ratio of water to solid, and will require a different number of days to form. Makes an interesting science project. ~Linda in Florida~ Happy Halloween Never put both feet in your mouth at the same time cause then you don't have a leg to stand on! ;o) email protected by http://www.grisoft.com Quote Link to comment Share on other sites More sharing options...
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