Found these rocks, trying to figure out what to do.

[MrGneissGuy]

So I found these rocks about 25 feet deep in what I believe to be an ancient river bed from a gold bearing source. Unfortunately, I will only have minimal access to this ground, as it will be permanently filled with concrete. Should I crush this rock or like leave it as is or what?

http://imgur.com/a/JWcTh

 

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[N-Lionberger]

Cant see anything.