Scientific research on glass Jue found in the Iron Age of Southeast Asia

Chemical compositions, phase components, internal physical structures of glassy matrix of the Jue samples are obtained. According to the scientific analysis results, the glass types of the Jue samples can be classified into three types, potash glass, soda lime glass and potash-lead glass. 42 samples belong to potash glass, and the 2 samples left belong to sodium-calcium glass and potassium-lead glass, respectively. Two subgroups, m-K-Al subgroup and m-K-Ca-Al subgroup, are found for potash glass.

Only 4 potash glass samples belong to m-K-Ca-Al subgroup, the others are m-K-Al subgroup potash glass. Drawing, casting and cold-working techniques were applied for the glass making. Most samples are colored by iron ion, or colored by iron and copper ions. Only one sample is opacified by lead tin yellow.