Plant, pigment, and bone processing in the Neolithic of northern Arabia–New evidence from Use-wear analysis of grinding tools at Jebel Oraf
Fig 11
Bottom grinding stone / Palette from ORF2 (300). WS: working surface; White letters on black dots: Low magnification photos; Black letters on white dots: High-magnification photos; Black letters/numbers on grey dots: Replica photos. (A) Grain edge rounding; (B) Residues of red pigment; (C) Granular, moderately reflective polish; (D) Granular/pitted polish with micro-striations (white arrow); (E) Generic weak polish and micro-residues of red pigment; (R1) Experimental replica used for grinding dry einkorn wheat for 600 minutes; (R2) Experimental replica used for grinding dry sorghum for 180 minutes. (R1) Micrograph of the actual tool. Reference collection of the Laboratory for Material Culture Studies, Leiden University; (R2) Micrograph of Provil Novo® mould. Reference collection of the Institute of Heritage Science, National Research Council of Italy, Rome.