After a short break, which I mainly spend writing the Hospental-Moos lithics report and flintknapping a bit, I am back at the microscope again. I now feel quite confident that I seem to have found my way around the machine and to have found, at least for now, my favourite settings. That is, the ones that seem best for my work. The photo shown here is a composite, The microscope takes a large number of photos, each with a different focus and combines them into a single picture with a large depth of field. This make it possible to produce the level of detail shown here.
The photo shows the distal, steeply retouched dorsal end of a scraper. That is lithic analyst speak for the scraper’s working edge, the bit that actually touches the material it is used to work. In this case that was dry sheepskin. And that is exactly what the white stuff atached to the stone is: sheepskin residue. At the Late Mesolithic site of Arconciel/La Souche (Switzerland) many very small scrapers were found and this scraper is pretty much an experimental replica of some of those scrapers.
During its experimental life (More information and photos here), this radiolarite scraper was on of seven which we used hafted (in a wooden handle, using birchtar and sinue) or unhafted to scrape sheep- and goatskin. Now taken out of its haft and cleaned, it is part of the reference collection for my use wear project,