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1943 P Jefferson war nickel with much more silver
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<p>[QUOTE="desertgem, post: 3541865, member: 15199"]I suspect that the analytics done by the mint at that time are more accurate due to the value of silver. Depending on whether your relative is a skilled user of the device or a chemical analyst educated on how the results have to be processed when there are differing amounts of the elements as some elements ( especially higher levels of lead and copper can cause inaccurate readings over other ( including silver). There are several papers that discuss this that can be found using google or the chem paper depositories ( charge) or publications by the XRF manufacturers. Here is the easiest one I could find by searching " xrf confusion with silver and copper" </p><p><a href="https://clu-in.org/conf/tio/xrf_080408/prez/XRF_02pdf.pdf" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://clu-in.org/conf/tio/xrf_080408/prez/XRF_02pdf.pdf" rel="nofollow">https://clu-in.org/conf/tio/xrf_080408/prez/XRF_02pdf.pdf</a></p><p><br /></p><p>Maybe if he contacted the XRF manufacturer and asked directly , they could help. Let us know as XRF machines are getting more available.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>
[QUOTE="desertgem, post: 3541865, member: 15199"]I suspect that the analytics done by the mint at that time are more accurate due to the value of silver. Depending on whether your relative is a skilled user of the device or a chemical analyst educated on how the results have to be processed when there are differing amounts of the elements as some elements ( especially higher levels of lead and copper can cause inaccurate readings over other ( including silver). There are several papers that discuss this that can be found using google or the chem paper depositories ( charge) or publications by the XRF manufacturers. Here is the easiest one I could find by searching " xrf confusion with silver and copper" [url]https://clu-in.org/conf/tio/xrf_080408/prez/XRF_02pdf.pdf[/url] Maybe if he contacted the XRF manufacturer and asked directly , they could help. Let us know as XRF machines are getting more available. Jim[/QUOTE]
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1943 P Jefferson war nickel with much more silver
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