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how gold ore is extraced

  • How is gold extracted from its ore science.answers.com

    Silver is commonly extracted from ore by smelting or chemical leaching. Ore treatment by mercury amalgamation, such as in the patio process or pan amalgamation was widely used through the 1800s, but is seldom used today.

  • GCSE CHEMISTRY Extraction of Metals What is a Metal ...

    The method used to extract a metal from its ore depends on where the metal is in the reactivity series. Metals above Carbon in the Reactivity Series. A metal above carbon in the reactivity series (potassium, sodium, lithium, calcium, magnesium and aluminium) can be extracted by electrolysis. Extraction of the metal from its ore involves ...

  • How Is Iron Extracted From the Earth? Reference.com

    Iron ores in the form of hematite (ferrous oxide) and magnetite are removed from the earth through mining. The use of heavy mining equipment is necessary to dig out large pits in an area with a large deposit of iron ore; however, because iron does not occur naturally, it is necessary to use a blast ...

  • Ore Wikipedia

    Gold ore (size: 7.5 × 6.1 × 4.1 cm) Cart for carrying ore from a mine on display at the Historic Archive and Museum of Mining in Pachuca, Mexico. An ore is an occurrence of rock or sediment that contains sufficient minerals with economically important elements, typically metals, that can be economically extracted from the deposit.

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