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<p>[QUOTE=&quot;GeorgeM, post: 2697976, member: 28550&quot;]That&#039;s quite a different number from the one I posted. If I&#039;m doing my math correctly, 161,000 tons = 5,152,000,000 troy ounces (161,000 * 2,000 (pounds per ton) * 16 (ounces per pound) or 5.15B tons (this number could be rather compromised by the use of troy vs avp pounds and ounces). That&#039;s vs the 10 billion troy ounces figure that I posted earlier. I wonder which is the correct figure? </p><p><br /></p><p>I&#039;m also finding data that indicates Palladium is significantly rarer in the earth&#039;s crust than Platinum. A 1:15 ratio seems to be repeated often, which seems really odd (especially since a single mine in Russia produces approximately 4x as much Palladium as it does Platinum). Here&#039;s some of the source material I found:</p><p><a href="http://www.outsiderclub.com/report/platinum-and-palladium-more-precious-than-silver-and-gold/935" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.outsiderclub.com/report/platinum-and-palladium-more-precious-than-silver-and-gold/935" rel="nofollow">http://www.outsiderclub.com/report/platinum-and-palladium-more-precious-than-silver-and-gold/935</a></p><p><br /></p><p>&amp;</p><p><a href="https://sg.finance.yahoo.com/news/palladium-basic-facts-investing-tips-135817196.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://sg.finance.yahoo.com/news/palladium-basic-facts-investing-tips-135817196.html" rel="nofollow">https://sg.finance.yahoo.com/news/palladium-basic-facts-investing-tips-135817196.html</a></p><p><br /></p><p>&amp;</p><p><a href="http://skeptics.stackexchange.com/questions/14569/have-we-only-mined-16-tonnes-of-platinum-in-the-whole-of-history" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://skeptics.stackexchange.com/questions/14569/have-we-only-mined-16-tonnes-of-platinum-in-the-whole-of-history" rel="nofollow">http://skeptics.stackexchange.com/questions/14569/have-we-only-mined-16-tonnes-of-platinum-in-the-whole-of-history</a></p><p><br /></p><p>I found another source that seems to have tackled the question by looking at the production records, and that methodology seems more practical (even if it is only current up to 2006):</p><p><a href="http://www.gold-eagle.com/article/worlds-cumulative-gold-and-silver-production" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.gold-eagle.com/article/worlds-cumulative-gold-and-silver-production" rel="nofollow">http://www.gold-eagle.com/article/worlds-cumulative-gold-and-silver-production</a></p><p><br /></p><p>Cumulative Silver Production = 42.97-48.8 billion ounces</p><p>Cumulative Gold Production = 4.06 - 4.84 billion ounces (for a ratio somewhere between 12.019:1 &amp; 8.878:1)<b></b></p><p><b><br /></b></p><p>If total Platinum production to date is only 9420 tons (as I&#039;ve found posted several places without any apparent methodology other than calculating the weight of a cube of the metal of the size that a textbook claimed was total production &quot;in the last 200 years&quot;), or 0.30144 billion ounces (9420 * 2000 * 16).</p><p><br /></p><p>That makes gold&#039;s ratio to Platinum something like 1:15 </p><p><br /></p><p>Palladium is quoted (by only a single source I can find, with no methodology or citations) as having a cumulative total of 3,781.5 tons in 2004 &amp; 4,890 tons in 2009:</p><p><a href="http://www.answers.com/Q/How_much_palladium_has_been_mined_in_human_history#slide=1" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.answers.com/Q/How_much_palladium_has_been_mined_in_human_history#slide=1" rel="nofollow">http://www.answers.com/Q/How_much_palladium_has_been_mined_in_human_history#slide=1</a></p><p><br /></p><p>Or, between 121,008,000 &amp; 156,480,000 ounces (0.121-0.156 billion cumulative ounces)[/QUOTE]</p><p><br /></p>

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