Be a Rock Detective!

Did you know that of all of the rocks in the world, there are only 3 main kinds? What are they? And how can you tell them apart? Jessi and Squeaks show you how you can become a rock detective!

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SOURCES:
http://jersey.uoregon.edu/~mstrick/As...

http://geomaps.wr.usgs.gov/parks/rxmi...

   • Exploring Rocks and Minerals  

http://volcano.oregonstate.edu/book/e...