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Rick recommends: Rock & mineral books
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Measuring Mineral Hardness at HOME using Fingernail, Nail and Coin
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The Process of Pyrite Mining ✨
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Gold Sulfides 101 (Module 1) Pyrite, Chalcopyrite, and Arsenopyrite #sulfidelayer #goldprospecting
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The Most Important Mineral of All Minerals
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Classification of Minerals in Geology: The First Step to Finding Gold
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Gold in Sulfide Form – Why Is It So Hard to Detect?
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Jadeite vs Fake Jade: Spot the Difference in Seconds!
