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13 cards from this deck
Rock with enough metal to make extraction economically worthwhile
Oxide (compound of metal with oxygen)
Gold and platinum
Cheap and widely available
Reducing agent and fuel
Removes oxygen from metal oxide
Metals less reactive than carbon
Metal + CO2CO_2CO2 or COCOCO
Fe + CO2CO_2CO2
Blast furnace
Iron, zinc, lead
Electrolysis
Electrolysis is more expensive
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