Dear Minkoo,
this sounds like the wood has burnt at a very high temp such that is is
vitrified.
the cells are melted.
I hope all is well, spring has arrived here!
Christine
Minkoo Kim wrote:
> Dear All,
>
> I am analyzing wood charcoal from ancient ceramic kiln, and have
> noticed that some wood charcoal remains (although they looked
> carbonized) were extremely hard. They were so hard that I could not
> even break with sharp razor. When I managed to break them open, most
> of them showed shiny sections that looked as if they were glazed. I
> suspect this is probably related to the temperature of the kiln for
> which the wood was used as fuel. I would greatly appreciate if
> someone can explain whether kiln chamber temperature is related to
> charcoal condition.
>
> Best,
> Minkoo
>
--
Department of Anthropology
University of California-Berkeley
Berkeley, CA. 94720-3710
USA
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