Rock Information Rock Uses Rocks are found in the earth crust. One good place to look for rocks is a mine shaft. Rocks are made up of minerals. Different mixes of minerals are found in different types of rocks . Quarries are not considered a rock by itself.
Granite is made up of quartz and mica.
A lot of things that are man made are made out of rocks and minerals. Concrete is made of rock particles, sand and cement. At a wet plant the cement is mixed and made ready for delivery. Minerals are also used to make things for transportation as well. Roads are made from a special rock called asphalt.