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. 2018 Sep 19;13(9):e0202511. doi: 10.1371/journal.pone.0202511

Table 7. Squares B8 and B10 6 mm artefact assemblage composition (n = 3,622).

Material Unmodified complete flake Debitage Core/core fragment Ground fragment Tula adze/slug Backed artefact Other retouch/
usewear
TOTAL
Chalcedony 29 41 1 1 1 9 82 (2.3%)
Chert 605 1113 12 5 46 137 1918 (53%)
Ironstone 10 23 3 36 (1%)
Quartz 46 250 10 1 6 313 (8.6%)
Quartzite 166 403 4 3 1 15 592 (16.3%)
Silcrete 242 400 4 6 26 678 (18.7%)
Tektite 2 2 (0.1%)
TOTAL 1100 (30.4%) 2230 (61.6%) 31 (0.9%) 3 (0.1%) 6 (0.2%) 55 (1.6%) 196 (5.4%) 3621