Precipitate gold

goldfever007 · Apr 13, 2018

Dear friends:
I was recovering gold from some material , and when i was precipitated it i got unusual material it was looks like metallic gold (i mean not brown or dark dirt it was yellow shiny gold)...!!!!???? :G
Could gold precipitate as metallic form ? and in which case could be that happen?
Thank you

anachronism · Apr 13, 2018

Yes it happens it's perfectly fine 8)

FrugalRefiner · Apr 13, 2018

goldfever007 said:
Could gold precipitate as metallic form ? and in which case could be that happen?

Just to be clear, gold is usually precipitated (reduced) in a metallic state. The brown "mud" is still metallic gold, but the particles are so small they don't look like gold. If you put a bit of the typical brown mud on a piece of white paper and rub over it with the back of a spoon or something similar, you'll see that golden shine.

Dave

Lino1406 · Apr 14, 2018

When the gold particles are bigger than nano size, e.g. with oxalic acid precipitation

Precipitate gold

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Precipitate gold

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