Gold and mineral assay and ID
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Thread: Gold and mineral assay and ID

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  1. #1
    hn
    Dec 2004
    Ojojona, Francisco Morazán, Honduras
    White's MXT Minelab Quattro Fisher F2
    278
    255 times
    Metal Detecting

    Gold and mineral assay and ID

    I posted this on the Gold Prospecting forum, but I think it should be here, too.

    Way back in 1958 or so I bought a set of little paperback books from a place called Dukes' Research Laboratory. Some of you may be familiar with it. It consisted of three parts, the first was called "Overlooked Fortunes in the Newer and Rarer Minerals", I believe. It was more or less a promotion for the second and third parts. The second part was called "Duke's Short Course in Prospecting and Mineral Identification". It was very interesting and went into the nut and bolts of finding mineral deposits in the wild. The third section, "Duke's Quick Qualitative Analysis" was the meat of the whole thing. It contained many quick and easy tests for most mineral elements you are likely to find out in the hills.

    Over many years of working in a gold assay lab and refinery, I had the opportunity to try out Duke's tests, and THEY DO work! They are not precise because they are QUALITATIVE tests, thus are merely to show the presence of certain elements and sometimes an approximation of quantity, but are not a quantitative assay.

    They are available online on many sites for a fee, but (may miracles never cease) I found a site where they can be downloaded as a pdf for FREE! The address is: http://silverprospector.com/dukes/dukes-vol1.pdf. If you want volume two, just change the "vol1" in the address to "vol2". They have been nearly impossible to find in the past, so I don't know how long they may be available. Anyone interested in the metallurgical aspect of prospecting will find them fascinating.

    If you can't get them from that site, I have both the paper copies and digital files.
    prospect007 and Highkamp like this.
    "I'm a wagged, wugged wover of the wild and wooly west.
    Of all the things I haven't got, I like GOLD the best!"
    Elmer Fudd

  2. #2
    us
    Dirthander

    Jan 2015
    South Dakota
    Compass Challenger X80, Magnum 420, 220, RM6, Coin Mag, 77B, Yukon Nugget, Teknetics Delta 4000, Garrett AT Gold. Master Hunter ADS 7, CXII, Bounty Hunter Big Bud Pro 220, TR550, 840 Auto , Whites MXT
    77
    55 times
    Prospecting
    Thanks for posting this, by following the link to the main website I was able to download a large number of very valuable mining and prospecting pdf. Amazing value, always trying to learn more within a budget, thanks for the great link.

  3. #3

    Jul 2019
    2
    All Types Of Treasure Hunting
    Quote Originally Posted by YumaMarc View Post
    I posted this on the Gold Prospecting forum, but I think it should be here, too.

    Way back in 1958 or so I bought a set of little paperback books from a place called Dukes' Research Laboratory. Some of you may be familiar with it. It consisted of three parts, the first was called "Overlooked Fortunes in the Newer and Rarer Minerals", I believe. It was more or less a promotion for the second and third parts. The second part was called "Duke's Short Course in Prospecting and Mineral Identification". It was very interesting and went into the nut and bolts of finding mineral deposits in the wild. The third section, "Duke's Quick Qualitative Analysis" was the meat of the whole thing. It contained many quick and easy tests for most mineral elements you are likely to find out in the hills.

    Over many years of working in a gold assay lab and refinery, I had the opportunity to try out Duke's tests, and THEY DO work! They are not precise because they are QUALITATIVE tests, thus are merely to show the presence of certain elements and sometimes an approximation of quantity, but are not a quantitative assay.

    They are available online on many sites for a fee, but (may miracles never cease) I found a site where they can be downloaded as a pdf for FREE! The address is: http://silverprospector.com/dukes/dukes-vol1.pdf. If you want volume two, just change the "vol1" in the address to "vol2". They have been nearly impossible to find in the past, so I don't know how long they may be available. Anyone interested in the metallurgical aspect of prospecting will find them fascinating.

    If you can't get them from that site, I have both the paper copies and digital files.
    This is wonderful and thank you for posting. I actually purchased a small assay test kit including tests for over 29? different items but the kit (ebay) was a vintage one and did not come with any details regarding the analysis. Nor did it come with any instructions as to who the mfg was of the kit, or any name or address etc. It wasnt until I came across this thread that I realized that the kit I have is related (or made for) the Dukes course as it matches perfectly with the tests presented herein. I tried to link (silverprospector) but it does not appear to work. I would love to have a digital copy of the 3 volumes (especially vol 3 since that has the test procedures if you would'nt mind sending me). Thanks again for posting and helping me solve a long mystery as to where my kit originated from.

 

 

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