Schists and their shiny origin

Why are so many houses in Philadelphia sparkly? What rock are they made of? What is a schist? What's the difference between a metamorphic rock, a sedimentary rock, and an igneous rock? These questions and more will be answered in this geology field trip!

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Intro and outro music: Overture of Die Zauberflöte (The Magic Flute) by Mozart

#geology #fieldtrip #philadelphia