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Eddygp
National Hazard
Posts: 858
Registered: 31-3-2012
Location: University of York, UK
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Mood: Organometallic
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Let us know if it's platinum... Wow... O.o
there may be bugs in gfind
[ˌɛdidʒiˈpiː] IPA pronunciation for my Username |
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unionised
International Hazard
Posts: 5104
Registered: 1-11-2003
Location: UK
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Mass of electrode 19.94 +/- 0.01g
Mass of water displaced 1.04 +/- 0.01 g
density 19.17 +/- about 1%
lit value 19.25
With the available equipment it is not possible to distinguish the density of this lump of metal from that of pure tungsten.
As you say " It does not take much alloying metal to quickly reduce the density of W. "
Re the darts, the reason for using tungsten is that it has a very high density and, as you say " It does not take much alloying metal to quickly
reduce the density of W. " so it would be counter-productive for them to alloy it.
So the actual evidence shows, in one case, and strongly suggests in the other that pure tungsten is a reasonably common commodity.
Incidentally, when they make light bulb filaments they start with tungsten rods and draw them.
To give some idea of the value of this find you may want to look at this
http://www.ebay.co.uk/itm/4-Pure-Tungsten-Rod-Electrodes-1-4...
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vmelkon
National Hazard
Posts: 669
Registered: 25-11-2011
Location: Canada
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Mood: autoerotic asphyxiation
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If you really think it is a PGM, then perform this simple test:
1. Shave off a small piece using a knife.
2. Heat it in a flame
3. Does it form a layer of oxide?
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