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Yeah this looks viable. This would make the best fake bar. I don't think the metal even need to be alloyed, you can just pour in one first, then the other.
by gatehouse 12y ago
Yeah this looks viable. This would make the best fake bar. I don't think the metal even need to be alloyed, you can just pour in one first, then the other.
- logicallee 12y agoI didn't mean it to be a viable suggestion - I don't think it is one. If you're testing density to within 2.7% you are doing other tests (suggested elsewhere by others in this thread). All I was saying is that although I do think the author is wrong (there is no problem of fake gold bars), the existence of a simple density test isn't why...
- gatehouse 12y agoyeah, this machine seems to be able to do it: http://www.ebay.ca/itm/GoldXpert-SDD-Portable-Countertop-XRF-Analyser-/201085598918 http://www.ebay.ca/itm/GoldXpert-SDD-Portable-Countertop-XRF...
- jamessb 12y agoThe first sentence of the original article states that XRF won't tell you if the core of the bar has been replaced with a different metal: "You don’t need to be a conspiracy theorist to find this worrying: a 1kg gold bar, certified as 99.98% pure by XRF (X-ray fluorescence) tests, turns out to have been drilled out and largely replaced with tungsten" The article also says that a micro-ohm meter can detect such replacement.
- wiredfool 12y agoAssuming you can figure out how to pour tungsten, or have something to pour it into.