Oroblanco
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- Jan 21, 2005
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PS I forgot to mention that the gold (or silver) itself may show visual differences in an ore comparison - one sample may have gold that is brassy yellow, while another may have a rusty, reddish tinge. This is not necessarily proof of different sources as it is well known that gold from different areas often has a similar color, hence a lot of gold in the Yukon has a rusty aspect, while Alaska gold is brassy yellow, and Georgia gold has a rich gold tone due to being very pure. The metals in alloy with the gold affect the color of it, so if more silver is present, often this lightens the color; gold that is fifty percent silver (as in the Oro Blanco district) is white and silvery not yellow at all. More copper in the natural alloy can give the gold a greenish tinge as another example.