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Heat death by volcano and other stories

Unexpected Elements

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The Hydrothermal Fluids and the Gold Deposits

Gold was only there through a set of spec circumstances and coincidences that happen throughout geological time. In order for the hydrothermal fluids to have stripped it out, there needs to be the right sort of pressures to form those Hydrothermal fluids. And also, it's the way that the gold is precipitated. It has to be a sudden precipitaton because if you had a very slow cooling down of fluid, actually your gold would be strewn over quite a large area as it cooledQuite slowly. You need a sudden, rapid drop in temperature so that all drops it in one specific spot. That means you've got a nice, rich gold deposit or.

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