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pics of gold in natural raw ore rock form
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pics of gold in natural raw ore rock form

Sep 15, 2016 How to Easily Test/Determine of rocks contain gold: This may be made by putting about an ounce of gold-and-silver-free mercury in a small stoppered bottle and adding the heavy material from the pan with a little water, and agitating violently for 5 or 10 minutes. The mercury is then panned free from mineral, and the latter examined again with a ...

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