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Large rectangle of heavy foil.
An example of the element Erbium

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Erbium Large rectangle of heavy foil
Large rectangle of heavy foil.
This fabulous, rather valuable sample of erbium was most graciously donated by George (not 007) Lazenby, who saw the slashdot discussion. I don't know the exact thickness, but it's quite stiff and solid for a foil. A very, very fine specimen.
George got this and the other samples he donated at a surplus auction of his highschool. It seems he was the only one there who appreciated the erbium foil. This sample and the others he sent had been donated to the school by a former student who worked at NIST (National Institute for Standards and Testing), where they had been used as x-ray calibration standards. This means they are probably very pure.
In fact, analysis by x-ray fluorescence spectroscopy at the Center for Microanalysis of Materials, University of Illinois (partially supported by the U.S. Department of Energy under grant DEFG02-91-ER45439) indicates that it is at least 95% erbium, probably quite a bit more than that.
Source: George (not 007) Lazenby
Contributor: George (not 007) Lazenby
Acquired: 9 June, 2002
Price: Donated
Size: 2"
Purity: >95%
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