I’m wondering in your picture where the gold is..it’s a blurry photo. Is all that yellow colored material gold or is it the larger specks?
If my images appear blurry I suggest you clean the fingerprints off of your screen.
When the gold particles are very small they absorb different waves from the light spectrum resulting in various colors to the human eye.
As a example very fine gold of the ionic size, the glass blower will add a minute trace of gold too the hot glass he/she is working to make Cranberry glass.
With an addition of a gold chloride solution heavier saturated with gold ions the end result would be Ruby Red glass.
The yellow material in the centrifuge bowel is gold larger than ionic gold thus the yellow color.
Once the yellow gold is melted to combine all of the smaller particles then you'll see gold as you know it by beautiful luster.
Gold leaf depending on the gold content will absorb light from the spectrum giving off color variations.
The specific gravity of gold is 19.32, the centrifuge increases the specific gravity by artificial means, increasing the amount of gold recovered thus increasing profit.
The slurry being fed into the centrifuge contains a host of elements the heavier elements slam against the wall of the spinning bowel forcing the lighter elements out, with an excess of water these are carried out and over the top of the bowel to be discarded.
Once the heavy elements gold, platinum and silver had been removed from the slurry, I fed the waste through the centrifuge once more to recovere the next heavy element which happened to be the copper.
