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Last Post 15 Jul 2021 03:54 PM by  Steven Brown
Fine gold
 24 Replies
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Steven Brown
Greenhorn
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05 Jun 2021 06:23 PM
    New to the GPAA one week new what do I need to get fine powder gold out of black sand what would be the best machine to use
    ARTHUR WAUGH
    Posts:915



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    06 Jun 2021 01:46 AM
    Classify your cons to at least 100 mesh for extremely fine powder gold. Use a magnet to go over the black sand while it's under water in the pan, kind of shaking at the same time. Save all of it to run again, and for later processing by another method I won't go into at this time. No matter the size of your gold, the closer the size of all material you're working, the easier it is to separate the gold.

    I watched a gold cube demo at the Portland show a couple years ago, using Cape disappointment material. It can run down to 600 mesh gold. Loss was negligible.
    For really fine stuff, and final cleanup, probably a miller table is the best bet, over trying to final pan it.

    Going to be a slow process in any case.
    Steven Brown
    Greenhorn
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    06 Jun 2021 03:02 PM
    Thanks for the info very helpful
    ARTHUR WAUGH
    Posts:915



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    06 Jun 2021 09:28 PM
    Neglected to say that even as good as the Cube is, you are still going to have to final clean.

    Don't have any experience with the Blue Bowl, but heard several tell that fine flour won't hold in it.

    Good luck and let us know your outcome.
    Sergio Ramirez
    Panner
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    Posts:36



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    10 Jun 2021 01:12 AM
    Hi Steve,
    I agree with Arthur, If you have the time and patience the Miller table is the best way to recover the fine gold, it's slow & time consuming, but it works great for me. In my garage, I built a Miller table with a deep well (half miller table & half V rubber mat), you use a low water flow and most of the fine gold stays on flat miller table as the black sand goes down, there is rolly polly gold that goes down also, that's where the V rubber mat comes into play, the fine gold usually stays in the first 3-5 V's of the mat and then clean out those 5 V's into a pan & pan out, also what I did is drill a round hole on the side of the miller table, and take a nice fine brush to brush the gold into the hole while the water is running a little lower when the black sand is mostly gone. I bought some pay dirt from the beaches of Nome Alaska to fine tune the table and recovered most of the gold, and run it through a few times also.
    Thanks,
    Serg
    Steven Brown
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    10 Jun 2021 11:21 PM
    Sergio thanks for the helpful tips
    Sergio Ramirez
    Panner
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    Posts:36



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    14 Jun 2021 03:00 AM
    my pleasure Steve,
    I'm only 1&1/2 years into mining, but have learned a lot since then, if your handy, it's easy building a table like mine, takes time but you can build it to your specs & needs, I've done a few different designs but I think this latest is the best so far, always thinking of new ideas to improve it also, i'm recovering quite a lot of fine gold with it, it does take time, but you can work your pay dirt in the winter, make sure to classify it though, at least 30-50 mesh. I'm sure you can also buy miller tables, but make sure it has a deep well, i think this works best with water flow. Good luck, let me know if there's anything else I can help with & will do so to the best of my short period of knowledge.
    Serg
    Steven Brown
    Greenhorn
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    16 Jun 2021 12:21 AM
    Serg I’m a long hall truck driver home time is short so I bought a Miller table can’t wait to get home to try it out and I will get some pay dirt to tune my skills and who did you get your pay dirt from and thanks for all the help
    Sergio Ramirez
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    Posts:36



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    16 Jun 2021 01:49 AM
    Hi Steve,
    I get my stuff & pay dirt from Gold Fever Prospecting ( <goldfeverprospecting.com> )
    speak with Harrigan, nice guy, # 1-888-985-6463 then dial 0., you can mention my name if you want. He told me about GPAA.
    I got the Nome Beach gold, Alaska Gold panning pay dirt 1/2 lb sale price $59.95, a lot of gold in it, a lot of fine & some nice chunky pieces, lots of black sand and very challenging, pretty much lots of fine in every small teaspoon, perfect for the miller table, you can classify it if you want, but I just run it the way it is. Look on their web sight under "Paydirt Gold panning concentrates"
    Good luck with it, & let me know how you did,
    Thanks,
    Serg
    Steven Brown
    Greenhorn
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    16 Jun 2021 09:05 PM
    Sergio I bought my Miller table from them so I will buy some pay dirt before I get home thanks again
    Steven Brown
    Greenhorn
    Greenhorn
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    16 Jun 2021 09:08 PM
    O and when I get home going to spend a day out at the buddeeclaim in Barstow ca
    Steven Brown
    Greenhorn
    Greenhorn
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    16 Jun 2021 09:10 PM
    Sergio I bought my Miller table from them so I will buy some pay dirt before I get home thanks again I’m going to a claim in ca for a day or two
    Sergio Ramirez
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    16 Jun 2021 11:10 PM
    Oh cool Steven,
    you bought their simple Miller table for fine gold for $109.oo? let me know how that works. Looks like they have a smooth rubber matting, I made my Miller table with acrylic and painted it with a green chalkboard paint with a deep well, seems to work good, i'm sure their design works well also.
    Too bad your way down south in LA, too far for me to go, at this moment, just too busy, have you been to that claim before? I'm in the SF bay area, haven't been to any of the GPAA claims yet, hoping to check some out sometime.
    Good luck,
    Serg
    Sergio Ramirez
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    18 Jun 2021 07:29 PM
    Hello Steven, one more thing when using your miller table, good idea to get yourself a pair of magnify glasses 3.5x or better, doesn't have to be expensive ones, I bought cheap ones, works ok, except the led lights do not work very good, maybe i'll spend a little more on them next time, but good to see the fine gold your brushing.
    Serg
    Steven Brown
    Greenhorn
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    19 Jun 2021 12:40 AM
    I will and no the Miller table was $265 it’s a package deal it come with accessories for the table
    Sergio Ramirez
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    12 Jul 2021 11:21 AM
    Hi Steven,
    just checking to see how your Miller table is working, just curious, hope it's going good, I went to the Stanislaus yesterday
    and did some crevicing, got about 30 small flakes, was pretty hot though.
    Serg
    Steven Brown
    Greenhorn
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    12 Jul 2021 03:43 PM
    Sergio love it works great ran about a cup of black sand and found 22 specs of gold I would have lost it just panning the sand
    Sergio Ramirez
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    12 Jul 2021 04:27 PM
    That's great to hear Steven,
    I would run it through a few times, they have some really fine gold in the bag, with a cup of that dirt probably should have found more.
    Usually with each small teaspoon i usually get from 8 to 14 small specs and some larger also. Good to hear.
    Thx,
    Serg
    Steven Brown
    Greenhorn
    Greenhorn
    Posts:21



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    12 Jul 2021 10:41 PM
    Sergio it was not a pay-dirt bag went out to a old abandoned mine and filled a 5gal bucket with dirt ran it through my mini max sluice panned the black sand and ran that on my Miller table were in the Central Valley do you live I use to live in Merced
    Sergio Ramirez
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    13 Jul 2021 02:00 AM
    Ah, even better Steven, it's always fun finding your own gold, good job.
    I live in the SF Bay Area, in San Carlos, but I go to the South Fork of the Stanislaus.
    Here's my number if your ever in the area and want to talk Gold,
    650-483-8360
    thx, Serg
    Kevin Bell
    Greenhorn
    Greenhorn
    Posts:7



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    15 Jul 2021 12:30 AM
    Steven -

    Miller Tables are highly effective but super slow. Larger separation tables are great but expensive, which means you better have a bunch of material to recoup costs. There are several sluice type recovery systems that get fine gold, are reasonably priced and can run small or large amounts of material.
    Also a great DIY. Call me if you have any questions.

    Equipment isn't nearly as critical as technique - There are three factors to watch when you are recovering fine gold.

    1. Maintain a laminar flow across the entire width of the recovery box – This is critical to get fine gold to drop and get captured.

    2. Reduce the height of water to 1/8 - 1/4” above your mat. Reducing the height of water going through equipment means the heavies are closer to the capture area and gold can’t get caught up in the water column.

    3. Make sure to slow your water velocity down based on the material size you are running. Water speed is critical to fine gold recovery. If your water speed is too fast the fine gold will either get caught in the flow or pushed out by the material without being captured.


    KB
    Steven Brown
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    15 Jul 2021 10:29 AM
    Keven thanks for the tips it will be very helpful I’m trying to learn about prospecting do you know of any book on the subject of prospecting that I can get and thanks to all the people who responded to my post you all have been very helpful
    KEVIN HOAGLAND
    Lost Dutchman
    Lost Dutchman
    Posts:304



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    15 Jul 2021 11:37 AM
    Steven,
    Undoubtedly the best book that I could offer you would be "Fist Full of Gold" Written by mine and Kevin's good friend Chris Ralph. From basic to advanced. Buy 2 of them, one for your kit box to referee too often and trash and the other for the prospectors library. :-)
    Kevin Bell
    Greenhorn
    Greenhorn
    Posts:7



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    15 Jul 2021 03:21 PM
    Steven -

    I agree with Kevin - Best 30 bucks you'll ever spend.

    Prospecting is research, mapping and then boots on the ground to verify that your research and mapping is valid.
    Lots of written material on the historical mining areas and districts out on the web.

    Once your research is done visual mapping programs such as Google Earth and GIS mapping programs give you an overview of the areas.
    Topo overlays help to determine how you are going to get into the areas you've selected.

    One of the best tools is right on this website - The Online Mining Guide has directions and prospecting tips written by GPAA members for many of the GPAA claims. I always check the OMG before I make a trip to any GPAA claim.

    I think Kevin Hoagland wrote an article on his prospecting method and we covered it extensively on our Podcast.
    https://onthegold.buzzsprout.com/

    The episode is Compartmentalizing & Confidence = Gold measured by, $ per yard over specks in a pan.


    KB
    Steven Brown
    Greenhorn
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    15 Jul 2021 03:54 PM
    Y’all have been a big help thank to you all


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