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Rocks And Minerals
Thursday, July 30, 2009 • 7:31 PM • 0 comments

Let's start off with an explanation that rocks and minerals are different things. Rocks are groups of different minerals pushed together and combined. They don't have easy chemical formulas to describe their makeup. A ruby is considered a mineral. It's a nice pretty crystal with the same compounds throughout the object. But the rock that surrounds that ruby has many many different compounds (and even a few pieces of ruby mixed in). There's an easier example that many people can relate to. Think about quartz. On its own (as a mineral) it's a nice pretty crystal. But a piece of granite often has loads of quartz. It's ground up and crushed, but its still bits of quartz. Granite is a rock and quartz is a mineral. Please click at http://www.geography4kids.com/files/earth_rocktypes.html if you want to know more about geography.

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xoxo, Mrs. Zayn Malik





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