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Copper salt for sure, likely Malachite (copper carbonate hydroxide). The brown rock is limonite (iron oxide hydroxides). Copper salt mixed with limonite is a good indicator for gold. Keep digging!

GC

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As mentioned above, copper mineralization. Malachite and/or Chrysocolla and a few specks of Azurite. As GC says, the iron oxide associated with Copper is often an indicator for associated gold mineralization. Take a few kilo samples and have it assayed. 

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I'd be crushing some of that reddish material below the blue. Might be a "skarn" and could hold gold.

Jim

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The bullfrog mine in the sierra's had native visible gold in malachite, so it is always possible. Gold is where you find it!

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You might watch this video from Jeff Williams. He talks about chrysicolla and skarns, and gold. The stuff he shows looks just like yours.

Jim

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17 hours ago, Aureous said:

As mentioned above, copper mineralization. Malachite and/or Chrysocolla and a few specks of Azurite. As GC says, the iron oxide associated with Copper is often an indicator for associated gold mineralization. Take a few kilo samples and have it assayed. 

Would a XRF gun work?

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