Archaeometallurgists have discovered a rare palm-leaf manuscript in a private collection in Odisha that details lost protocols for the synthesis of specialized antimony-lead alloys. Dating to the 9th century, the text belongs to the Rasashastra tradition and describes a multi-stage purification process used to create high-reflectivity mirrors and ritual implements.
The manuscript provides precise temperature controls and chemical additives, such as specific botanical extracts, used to achieve a silver-like finish on base metals. Scientific testing of contemporary artifacts from nearby sites has confirmed the presence of the exact chemical ratios described in the scroll, providing a direct link between medieval theory and industrial practice.