  Germanium button.
Description supplied by the source:
This germanium button was melted from standard 5N+ pure melt stock in an vacuum arc melter- the germanium and surrounding crucible were heated much more than was necessary to melt the small blob, so that the rate of heat loss was slower and greater crystalline structure had time to develop. Although this is the same purity of material that is used to grow the oft-seen trapezoidal monocrystalline bars of germanium, arc melting is of course much more of a chaotic, disruptive, and impure process, where large crystalline grains are not present to the extent that the purity of the original melt stock would allow for. Nevertheless, crystals resembling ice on a window pane are visible on the surface, as I had hoped for when melting it.
Source: Ethan Currens
Contributor: Ethan Currens
Acquired: 21 March, 2008
Text Updated: 21 March, 2008
Price: Anonymous
Size: 0.75"
Purity: 99.99%
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