This biface fragment was collected from the Thompson site in Rice County and donated to the Kansas Historical Society in 1971. It may have been stored for future use (what Archeologists call a cache), been meant for trade, or had some other significance we today do not know. It was broken prior to its donation. It is made of a large slab of Smoky Hill silicified chalk, a good quality knapping material that is exposed in linear beds in northwestern Kansas and western Nebraska. The site, listed in the National Register of Historic Places, was a Great Bend aspect (ancestral Wichita) village occupied during the Late Ceramic Period.