Rock Identification with Willsey: Volcanic Rocks (Tuff, Obsidian, Pumice)
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Rock Identification with Willsey: Intro to Sedimentary Rocks!
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Minerals with Willsey: Feldspars
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Rock Identification with Willsey: Conglomerate, Breccia, and Diamictite
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33. How to Identify Rocks
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How to Tumble Obsidian
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Rock Identification with Willsey: Volcanic Rocks (andesite, dacite, rhyolite)
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All About Fire Obsidian & More Amazing Natural Glass!
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