Blue conglomerate-ish mystery

[dangerryder13]

I found this in the same spot I found my platinum Nuggets. (jeweler scratch tested positive as platinum) I pulled out quite a bit more that I'm confident is platinum Group as well. I think this may be as well but i cannot find anything similar. I'm posting pictures of a few others as well. All were found in the same location.

 

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[Kray Gelder]

The top two look like volcanic ejecta. Shattered rock embedded in ash. You must be in western Missouri. The two large upper left...dolomite, maybe? Platinum is not known from Missouri.