> table salt (halite crystals), magnified If someone at the dinner table said, "Pass the rocks, please," what would you give that person? Salt, of course! The salt that people use to season food...
A crystal garden
When small crystals of a mineral join together, they "grow" into larger crystals. You can see how crystals grow by growing some crystals yourself. Here's what you will need: 6 tablespoons of water ...
Flat sides and sharp corners
A chunk of mineral may seem to be just a jagged, lumpy, or twisty piece of hard stuff with no special shape. But each kind of mineral is actually made up of tiny shapes called crystals---shapes that...