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Samuel Franklin Hunt Nevada’s “Rio Tinto”

At the well-known Rio Tinto copper district, Huelva, in southwestern Spain, large quantities of copper were found beneath a gossan of hematite at an average depth of 100 feet. The deposits were first mined during Roman times.

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Samuel Franklin Hunt Nevada’s “Rio Tinto”


At the well-known Rio Tinto copper district, Huelva, in southwestern Spain, large quantities of copper were found beneath a gossan of hematite at an average depth of 100 feet. The deposits were first mined during Roman times.

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