| | |   Etched block. This is an interestingly etched block of high-purity aluminum, showing the crystal zones.  It is a full bar of the material featured a few samples back in the form of a short slice.
 Source: Ethan Currens
 Contributor: Ethan Currens
 Acquired: 8 February, 2009
 Text Updated: 8 February, 2009
 Price: Trade
 Size: 8"
 Purity: 99.99%
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