Chemical sample 11


Residue extracted from the inner surface of one of three cylinder jars produced a mass spectrometer reading confirming that it contained theobromine (Crown and Hurst 2009: 2011).

Phase Date

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References Cited

Crown, Patricia L. and W. Jeffrey Hurst
     2009    Evidence of Cacao Use in the Prehispanic American Southwest. Proceedings of the National Academy of Sciences, USA 106(7):2110-2113.


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