Copper in Ancient India c12.s2.4

c12.s2.4

(2) *Vimala* or copper glance—the following formula for the extraction of copper from *Vimala* is given in *Rasaratnākar*, *Rasārnava* and *Rasaratna-samuchchaya*: “*Vimala* digested with alum, green vitriol, borax and the watery liquid extracted from *moringapter*, *musa sapientum* and finally roasted in a covered crucible in combination with the ashes of *schrebera swiet*, yields an essence in the shape of *chandrārka* (literally copper of gold-like lustre).”²