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Found uncombined in nature
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Extracted in Kiln
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Extracted in Stone Furnace
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Alloy - Made from Copper/Tin
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Extracted by Calcination
Iron Ore Smelted -
Smelted by Iron Ore and Other Metals
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Extracted by Metal Displacement with Sodium/Magnesium
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Bayer Process and Electrolysis in Cryolite Solution