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Dec 16, 2019
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Hi all

We are new to gold prospecting. My 10 year old son got interested after doing a school project on the Victorian Goldfields. He got so keen we got him a pan and we went to Warrandyte. He spent hours panning and to our surprise he found specks of gold. One thing led to another and I spent the winter hauling dirt from a dried creek in Research for him to sluice. Further down the track I get the fever also, we get a break of luck and manage to get us a Minelab GPZ7000. We've (son is 13 now) only been out 5 times but we have found two sub-gram nuggets. The third time we went out we found a specimen but we don't know how to accurately weight the gold in it. Can anyone advise an accurate way to weigh the gold in it. Anyway, its a great endeavour and most enjoyable whether we find anything or not.
 
Hi Powmill,
IMO home specific gravity tests should be taken with a grain of salt & only used as a rough guesstimate.
https://www.gold-nuggets.org/specific-gravity-test.htm

As an example I recently did some specific gravity tests on a piece I found.
Initially I got a result saying 7 ounces >>> there was considerably less than that
I tried another variation of the test & it said no gold >>> there was considerably more than that :D
My piece though was very hard to do correctly as it contained clay, quartz, ironstone, some country rock & cracks/voids as well as gold.
The only 100% accurate way to know (unless you have a laboratory set up) is by crushing it up but that's not always desirable.
 
welcome to PA Powmill & hope the success continues.
As mbasko suggests, the specific gravity test is an approximation. If your speci is all gold & quartz with very little or no other crap, then the result may be a bit better, but should always be used as a rough indication only.
 

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