Sodium does come from the earth, but not in elemental form.
Sodium is mined in the form of halite in salt domes underground or evaporite in an arid region climate. Sea salt can be collected, harvested by evaporation of sea water in pounds. The sodium is ionically bonded with chloride, chlorine ion. Electrolysis is the next process to separate the chloride from the sodium. The factory that does this gets two income sources, the sale of sodium metal and chlorine, a halogen nonmetal, greenish yellow poisonous reactive gas.
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