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Flour gold suspended in soda-lime glass blasting material

I have a bucket full of soda-lime glass bead blasting material that has flour gold mixed in it. I can't remove the gold by means of mechanical separation and was wondering if there's a chemical method to dissolve the soda glass leaving the gold behind. I am willing to send samples to whom ever can help and you may keep the gold that you extract in return for information. I can see the gold with a jewlers loop. This is a lucrative opportunity for whoever can assist me. I have already turned in over 10k$ worth of gold that was larger pieces but now the gold is very tiny and sifting is not doing the trick anymore. I'm looking at a mercury method but I'm interested in dissolving the soda-lime glass chemically. TIA

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