more soil questions, noob strikes again! Options

[fenixsmom]

So I've been digging at this river for a few days and I've noticed some interesting soil deposits. I'm wondering if they are even worth my time. In one area there is an eroding man made rock slide area that backs to a willow covered plain. I went digging into it today and found a decomposing vegitation/mud/black sand layer underneath there I found a rusty sandy lome layer. It seems to be untouched by others judging by the red stained rocks I went through.
There is another section I played in across the river where there is a dark black sand area that has black stained rocks with silver streaks running through the stones. Above the dark sand area is a normal river sand layer.
Do either of these sound like it's better to dig through? Or if I need to provide more information?

[swizz]

Send it to the CP Club, I'm donating.... you can have Dan & Denise put it on hold for you for a membership (if you don't already have one) or just send it to them as a donation from me... either way. I can ship you the mini sluice via US Postal (PM me a PO Box or something if you want) or if you're a CP Club member by springtime I'll bring it along for a CP outing on Clear Creek and pass it on to you there. We'll probably do a 1-day outing there early spring, before runoff like last year... really fun. Planning is in the protected forum.
So ya, whatever you wanna do.