Editing Box of Rocks (section)

== Why This Works ==

''Geology'' is the study of rocks and the solid earth. Geologists have identified three types of rocks: sedimentary, igneous and metamorphic. ''Sedimentary'' is when you have a rock which is the result of small bits and pieces of rock fusing together. ''Igneous'' is when you cool molten rock and it solidifies. ''Metamorphic'' is when you take an existing rock and you put high pressure and temperature on it. The different types of rocks can all change from one form to another, meaning an igneous rock could become metamorphic, which could then become sedimentary, which could become igneous again!

''Mineralogy'' is the study of the chemical composition, or makeup, of different minerals and finding ways to use them. Minerals are all very different, and have a variety of purposes. Some are decorative, like Olivine for jewelry, Hematite for pottery and Quartz for decoration. Some are useful, like Halite as table salt, Talc as talcum powder and Graphite as pencil lead. Others are used for extracting elements, like Galena for lead, Magnetite for iron and Pyrite for sulfur. Specific information on the minerals is included with them.