Figure 3
From: Neandertal fire-making technology inferred from microwear analysis
Images of mineral use-wear traces on an archaeological bifacial thinning flakes CPN E19-318 (top) and CPN E14-243 (bottom) from Chez-Pinaud/Jonzac (Charente-Maritime). The white and black lines demarcate the zone of mineral use wear traces comparable to pyrite. The arrows indicate the orientation of the striations. The star on CPN E19-318 indicates these traces are located within a zone of heavy percussion and crushing (b), the percussion mark directionalities being somewhat variable, though many open distally in agreement with the striations. (a) High-magnification images of well-developed mineral polish and striations on CPN E19-318. (c) Low-magnification image of the surface of CPN E14-243 highlights the heavy rounding of flake scar ridges. (d,e) High-magnification images of well-developed mineral polish, striations and slightly wider and deeper surface scratches.
