[Jewelry making - Article 00057] - Re: [Orchid] Ancient gold granulation process

[Michael Sonnenberg]

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>     The writer claimed that by cooking gold granules in charcoal, it
>     was possible to form gold carbide on the surfaces of the granules.
>     Gold carbide in this explanation has a lower melting point than
>     gold. 

    This is an old myth born by authors like Marc Rosenberg with his
    influentual book from 1910-25. It was perpetuated without any
    scientific proof. Goldcarbide appears very rarely and is not constant.
    It therefore could not be the explanation for the granulation process.
    And it was not logical, either, for, as anyone knows, carbides have
    instead very high melting points.  

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