How do you know what type of rock you have? Join us to learn how to tell one type of rock from another.

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The layered rock in the thumbnail image on the far left is called Vernon Wonderstone. It comes from a quarry in Utah and is technically a “welded vitric tuff,” a type of volcanic rock. The colored bands are caused by groundwater containing iron oxides that has weathered the tuff. This is one of my favorite rocks and I wanted to show it during our lesson but ended up not having time to talk about it in the video lesson.

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