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Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum -- Ignore unavailable to you. Want to Upgrade?

To: ScatterShot who wrote (56707)	10/20/2009 9:29:23 PM
From: Box-By-The-Riviera™	Respond to of 218705

mucho thanks

To: ScatterShot who wrote (56707)	10/21/2009 2:52:02 AM
From: energyplay	Read Replies (1) \| Respond to of 218705

Good points. X ray fluorescence - pretty directly analytical, should be able to penetrate the depth of a coin. The density of Tungsten at 19.25 g/ cm 3 is just under that of gold at 19.30 g/ cm 3 that this might squeak by specific gravity tests, especially is there was some silver in the gold. For pure gold, a clever person might use a little Platinum at 21.45 g/ cm 3 to match the specific gravity exactly. A careful person would limit the size of the tungsten slug to the center of the bar, and fake only half the bar. That might avoid detection by the lower power Xrays. If someone re melts the gold bar, it is game over, since the gold will melt, and be pored out, and there will be the big hunk of tungsten sitting in the crucible like the glowing turd of deception... I agree about the damage to the dies if the tungsten is thick, but gold is very very soft if pure - you can dent it with a hard finger nail. So a very thin tungsten wafer might work. One problem with coins is that the barrier to someone cutting one in half or melting one is much lower than for 400 oz. bars.