Gold origin via IR tracer

[goldandsilver123]

Has anyone heard of IR tracer that can be melted with impure gold at the mine that will survive the refining process and show in the refined gold bar?

The tracer is a IR pigment that survived the melting process, refining and melting of pure metal. It's supposed to be visible to the naked eye with an 30W IR ~840nm laser as green, red and blue dots on the bar.

 

[Yggdrasil]

Has anyone heard of IR tracer that can be melted with impure gold at the mine that will survive the refining process and show in the refined gold bar?

The tracer is a IR pigment that survived the melting process, refining and melting of pure metal. It's supposed to be visible to the naked eye with an 30W IR ~840nm laser as green, red and blue dots on the bar.

Do not sound plausible to me.

 

[goldandsilver123]

Not to me either.

But they are showing this in a trade show, and is in gold that I refined.

The XRF spectrum didn't show any strange element.