I have classified, now what about that darn clay? Options

[rubinscube]

So I classified my concentrates down to a par above flour gold, which we have a lot of here in Colorado. I still have a fine brown talcum clay powder material that seems to be as fine or finer than flour gold. The darn stuff is sticky and I can't see squat barely when I run my desert fox or even when I hand pan. Any advice would be much appreciated and thanks to all the help with my other posts.

[CP]

You also might think along the lines of weights when researching what the "clay" material that acts like gold could really be.
Possibly a little historical research about past production from the same areas and upstream that could be possibly involved in the alluvial deposits where they were found. Then use that and specific gravity (weights) to eliminate what it's not and more likely is what would be caught in the spiral pans becuase it's a bit heavier than all the rest like gold.

I would think if it's actually a clay material then it would wash off panning but maybe not in the spiral panners.

CP