- Granite is one of the most highly sought after rock for rock climbing because it is very strong
- Marbles have been made of round stones, clay balls, marble, porcelain, glass and steel
- Granite is the signature rock of planet earth
- New Hampshire is known as the granite state
- Limestone can be used to thicken paint
- The stones used in the sport of curling are made from granite
- Marble derives from limestone or dolomite
- There are over 700 different types of igneous rocks
- Did you know slate can stand up to freezing weather
- Marble can sometimes be a host rock for gem minerals
- You can find limestone in shallow ends of marine waters
- The pedestal the Statue of Liberty stands on is made from granite
- Brown stone was used in the Civil War to build homes in some places
- Diorite is a coarse grained rock that has a salt and pepper appearance
- The first commercial railroad in the U.S. was the “Granite Railway” of Quincy, MA.
- There is granite in Australia that is believed to be over 4 billion years old
- If you use high amounts of heat and pressure on limestone it turns into metamorphic rock
- Slate can be used in a variety of uses like flooring, roofing
- Granite is strong because its mineral grains formed tightly together during a very slow cooling period.
- Sedimentary rocks are made from eroded pieces of other rocks or even remains of plants and animals
- Until the 1800's slate was used by students at school. They wrote with a "slate" pencil
Southwest-Granite.com http://www.imarbles.com/historyofmarbles.php
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