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|  |  |  |  | | |   Two kinds of tin in one. This is an odd thing: A piece of tin showing both the alpha and beta tin allotropes in one piece.
 Source: Anonymous
 Contributor: Theodore Gray
 Acquired: 28 February, 2009
 Text Updated: 1 March, 2009
 Price: Donated
 Size: 1.5"
 Purity: 99%
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