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9 November, 13:53

The process of extracting and separating gold in remote regions often results in environmental contamination with what?

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  1. 9 November, 15:36
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    Answer: mercury

    Explanation:

    A common method for gold extraction is by crushing the gold ore and mixing it with sand. Mercury is the added afterwards. An amalgam is formed which has a silvery appearance. This is the Gold - mercury amalgam. Some mercury may evaporate thereby contaminating the environment with mercury. The cyanide extraction process which involves reacting gold with hydrogen cyanide may also lead to cyanide contamination.
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