Make Colorful Crystals from Coal

• an adult helper

• measuring spoon

• liquid blue laundry detergent

• iodized salt (table salt)

• small bottle of ammonia

• small jar

• plastic picnic spoon or old table spoon

• 8 to 10 charcoal briquettes

• disposable pie tin

• food coloring – any colors

1. Measure 2 tablespoons each of liquid blueing, laundry detergent, salt, and ammonia into a small jar. Have an adult helper supervise this mixing. Avoid breathing the ammonia fumes as much as possible. Stir with an old tablespoon or plastic picnic spoon.

2. Place 3 or 4 charcoal briquettes on a disposable pie tin. Add a few drops of food coloring on each briquette.

3. Pour some of the detergent, salt, and ammonia solution over the top of the charcoal pieces. While the crystals are forming, replenish your supply of solution.

4. As you enjoy the beautiful colors and shapes that emerge, repeat the process with 3 or 4 more briquettes.

This fun activity will not only introduce your child to geologic concepts, it will also make your child realize that beautiful things can come from unlikely places, and that colorful jewels can hide even in the blackest briquette!

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