Table 2 The morphological features and compositional differences of hare’s fur samples

Silver hare’s fur glaze

(1) Indistinct boundaries

(2) Silvery hare’s fur area: dendritic, uniformly-distributed, small-sized and highly-covered ε-Fe₂O₃ crystals

(3) Black glaze area: evenly distributed nanoscale crystals

(1) The highest SiO₂ in all areas

(2) The lowest Fe₂O₃ in all areas

(3) Relatively high-level CaO in hare’s fur area

Gold hare’s fur glaze

(1) Distinct boundaries

(2) Golden hare’s fur area: dendritic, inhomogeneous and relatively low-covered crystals, mainly small-sized crystals and sporadically single large-sized crystals or crystal clusters with large scale feather-like dendrites at the border

(3) Black glaze area: no obvious crystals

(1) The highest Fe₂O₃ in the hare’s fur area

(2) The lowest SiO₂ in all areas

(3) The highest CaO in all areas

Yellowish-brown hare's fur glaze

(1) Indistinct boundaries

(2) Yellowish-brown hare’s fur area: amorphous iron-rich materials with honeycomb structures, occasionally emerged large-sized crystal clusters with feather-like dendrites at the margin, large inter-crystalline gaps with the lowest crystal coverage

(3) Black glaze area: no obvious crystal structures

(1) The highest Al₂O₃ in all areas

(2) The relative low-level of CaO in the hare’s fur area