Fig. 5From: Analyses of the brown stain on the Parthenon Centaur head in DenmarkXRD pattern of sample KLR-2369/P2. Gp gypsum (CaSO4·2H2O), Qz quartz (SiO2), Cal calcite (CaCO3), Wd weddellite (CaC2O4·2H2O), Ww whewellite (CaC2O4·H2O), Mag magnetite (Fe3O4)Back to article page