Wikijunior:Let's Talk about Crystallization in the Naica Mine/6 - Glass and Crystal

< Wikijunior:Let's Talk about Crystallization in the Naica Mine

5 - Gypsum Crystals in Both Caves

6 - Glass and Crystal

7 - Everything Is Made of Atoms

What is a crystal? Is the man-made glass in a window the same as the crystals you can find in nature?

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