Biface

A stone tool flaked on both faces — a preform, a knife, a point. A biface that never became a point (a cache blade, a quarry blank) is a legitimate artifact class in its own right and a common thing for a dealer to mislabel as a “knife”.

Sources

Andrefsky, W. (2005). Lithics: Macroscopic Approaches to Analysis, 2nd ed. Cambridge
Whittaker, J. C. (1994). Flintknapping: Making and Understanding Stone Tools. Texas

Cite this article

Stratum Study. "Biface" (Glossary). Stratum Study pack 2026.09, as of 2026-09-16. https://stratum.black/study/glossary/biface. Accessed 2026-09-21.

BibTeX · CSL-JSON

@misc{stratum-biface,
  title        = {Biface},
  author       = {{Stratum Study}},
  howpublished = {\url{https://stratum.black/study/glossary/biface}},
  year         = {2026},
  note         = {Glossary article, Stratum Study pack 2026.09, as of 2026-09-16; sources: stratum. Accessed 2026-09-21.}
}

Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.