The vessel-surface treatment of this sample is glossy and black. The depositional context is not quite clear, nonetheless the sample could have been recovered from either depositional fills or living surface/floors.
Henderson, Jon S., Rosemary A. Joyce, Grant D. Hall, W. Jeffrey Hurst and Patrick E. McGovern 2007 Chemical and Archaeological Evidence for the Earliest Cacao Beverages. Proceedings of the National Academy of Sciences, USA 104(8):18937-18940.
Joyce, Rosemary A. and Jon S. Henderson 2007 From Feasting to Cuisine: Implications of Archaeological Research in an Early Honduras Village. American Anthropologist 109(4):642-653.