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Going for Gold

Posted by: wri192

February 22, 2017

A gold nugget
A study of the characteristics of gold nuggets from around Australia revealed that they formed at high temperatures. Since these temperatures do not occur at the surface, the nuggets must have originated deep underground. Previously, it had been thought that gold nuggets formed in place, where they were found, either precipitated from fluids or grown from microbial action. Their presence near the surface is the result of geological process and weathering over vast periods of time.

https://research.csiro.au/going-for-gold/