Have you tried to invest in gold dust?

Have you tried to invest in gold dust? Haven't you asked yourselves why invest in gold dust? My brother invested in gold dust and we, his siblings opposed on this because we did not know if there was gold dust. My brother's 6-hectare land was suspected to have d dust so he hired a chemist to check the verifications. And then, my brother-in-law is a Chemist and he told my brother that he should not ruin his property because of the gold dust. He needs 1 ton to be able to produce i ounce of gold dust. We checked his property and we saw the land soil glittered. The cause of it was the gold dust. And then he asked permit to the Bureau of Soil and was told to refrain doing the act of insanity because the land is precious and the gold dust is very impossible to gather to million tons .