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Last Post 23 Apr 2019 06:34 PM by  William Hall
How do I evaluate a ledge or out-cropping of quartz?
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Edward Larsen
Greenhorn
Greenhorn
Posts:2



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23 Apr 2019 11:21 AM
    I found a ledge or out-cropping of quartz and would like to evaluate it. It is in El Dorado county, Ca and is over-grown with a lot of brush and poison oak. It appears to be either half buried boulders or an outcropping that is exposed in a small gulch. I have a Garrett AT-Gold and a pin pointer. Can I scan the quartz with either of these to see if any gold is present? I also have a sniper coil for the AT-Gold which I could try. Once I clear the brush I'm planning to scrape and brush the moss off of the boulders so I can get a better look. Any suggestions or help will be appreciated.
    CHRISTOPHER SATKOWSKI
    Sluicer
    Sluicer
    Posts:62



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    23 Apr 2019 12:18 PM
    I would recommend a X80 power loupe looking at the quartz and spot checking it for gold. I'd also recommend getting a couple of golf ball sized rocks of the type of quarts in your area that has gold, crushing it and panning it. In my area its the white quartz with lots of black brown minerals in it that would contain the gold.

    You're really looking for placer gold, and with a pointer or metal detector is way too small to find. Of course use the pointer and metal detector like you said, but if you find gold lode gold with a metal detector, you're on to a rare find. The smaller flakes are much, much more comon than the nuggets.

    You can even sample downstream of this outcropping, but if its a dry creek without water, makes it difficult.

    I've yet to find lode gold from quartz outcropping, so good luck.
    Edward Larsen
    Greenhorn
    Greenhorn
    Posts:2



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    23 Apr 2019 03:41 PM
    Thanks for the suggestions. I think I have a small magnifying scope I can use. I need to find a steel mortar and pestle somewhere that I can crush with.
    William Hall
    Buzzard
    Buzzard
    Posts:523



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    23 Apr 2019 06:34 PM
    Edward,

    Look for dirty quartz meaning, rust colored like the quartz is rusty
    or a redish color, any discoloration
    I also agree with Chrisropher, in that unless there is a large nugget close to the surface, your MDs probably wont see it

    Bill
    So Much River So Little Time...Get Out There
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