Mined gold?

Question

is it true that when gold is mined, it is mixed with copper and silver and other minerals?

(no, i dont mean minerals stuck at its side. I mean if its mixed with the gold)

Answer 1

Please tell us what U R, Where from, & Time Zone, e.g.

(My)   OLD/M from S'pore  --Time: 1848 on 10/7/08 (Thurs)

Look at the time difference -- before or after U.

Gold & Diamond Mines are mostly in Africa, but there are river gold found in America during the old gold rush to the WEST and as I know gold dust & droplets found in Pahang River in Malaysia in history.  Therefore it is not the same at different places in different forms.

On gold mixed that is for jewellery makers ---they need to harden the gold to scruture into ornaments (standard 916).

For bullion or gold bar, it is 99+ in purity (Figure? pl correct me if you are expert).   I Think there is enough Gold Talk.

Answer 2

This is true but the quantity of these other metals varies greatly depending on where the gold is mined. It can be as little as 0.1%  or less up to the conditions where the material is mined for some other metal and the gold is in such a small proportion that it is only a byproduct.

Answer 3

Gold is sometimes mixed with silver and/or copper to harden it and affects its color to make jewelry and the metals melt easily together.  In nature, hot magma from deep within the earth's crust reaches the earth's surface but takes even centuries to cool in chambers under the ground.  This permits many minerals and metals with different melting temperatures to separate due to weight differences as they cool.  One of the cooled layers may become rich in gold or silver or copper and sometimes a layer can become rich in more than one metal.  If an earthquake, etc. opens up a crack in the solid rock near a chamber, liquid metals may fill the crack forming a seam (the mother lode!).  As mountains are pushed up by tectonic plate collisions, the seams may rise well above sea level, potentially delighting a prospector and his mule (that may receive an extra carat?).