Fig. 10: Comparison of slag composition from pit H235 at Luojiaba with the composition of inclusions in iron artefacts recovered from the graves at Luojiaba and in iron artefacts from pit H235.

a PCA diagram of the composition of furnace slag excavated from H235 at the Luojiaba Site and the inclusions in iron artifacts excavated from H235 and the burial area; b Diagram of the Al₂O₃/SiO₂ ratio of the composition of furnace slag excavated from H235 at the Luojiaba Site and the inclusions in iron artifacts excavated from H235 and the burial area; c Diagram of the K2O/CaO ratio of slag components excavated from H235 at the Luojiaba Site and iron artifacts excavated from H235 and the burial area; d Diagram of the MgO/Al2O3 ratio of slag components excavated from H235 at the Luojiaba Site and iron artifacts excavated from H235 and the burial area.