Learn+about+rocks


 * [[image:http://volcano.oregonstate.edu/vwdocs/vwlessons/lessons/Rocks/Picture4.jpg align="left"]]**//Rocks//** are made of two or more different minerals that have been: # cemented together, or
 * 1) squeezed and heated together, or
 * 2) melted and cooled together.

Rocks make up the majority of the Earth's crust. One of the most common rock is granite. The four minerals that make up granite are **//feldspar, quartz, mica, and hornblende.//** Granite was formed when magma cooled slowly forming crystals of the four minerals that make up the rock granite. Look at the photo above of granite. Notice the different mineral crystals that make up the rock, granite. == == || Read about rocks and answer the questions on your packet.