A recommendation of: Amélie Demoulin, Carine Perrin, Odile Guillon, Valérie Gontero-Lauze, Jean Rouquerol, Florence Boulc’h Reconstructing a medieval recipe for red lead (Pb₃O₄): an archaeometric approach https://doi.org/10.5281/zenodo.18702367
Sofia Kouki (Fri,) studied this question.