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View Full Version : Yellow dirt, (Clay) ? Grubstake

09-23-2012, 11:29 AM
Neat photo of Grubstake Valley. Half snow and half not.

What is the yellow dirt.? This is out of our Blueberry Knob out cropping.

09-23-2012, 11:45 AM

It looks like oxidized iron (Limonite). This shows you are in a well mineralized zone. This could be a "halo" also known as a "gossan" surrounding a much larger sulfide deposit.


- Geowizard

09-23-2012, 05:09 PM
Could this be an area that caught and cemented togather the Iron cap leach? Leaving the ore body below the iron cap somewhere close to the vicinity of the yellow clay deposited in the first photo. In saying that, I think maybe you have found the remains of the old iron cap and the good ore geology below the now gone cap is somewhere close to your yellow deposit. Are there places above your elevation or are you on top of the valley floor at the highest point finding the yellow clay? If you are already at the top I'ts a whole different can of worms, shifted plates and faults come into play. Just thinking with my fingers again; "V" Have you seen any of these character's hanging around too???

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09-24-2012, 10:40 AM
We are not on top of the mountain. Around the 3,000 ft level. We did pan the iron oxide out and found gold in it. He carefully pans each layer. The photos of the limonite are in our findings. Our Spains Vein is a blow out of red gold bering iron ore on the top of the mountain. Both attached photos are of the Spains Vein.