Minerals and Metals in Ancient India v1.c26.s6.t5.8

v1.c26.s6.t5.8

et al. (1985 b: 8) observed that “Fe/Pb/Ag ratios are closely similar in the retort residues and in the modern concentrates”, and on that basis 500 g of zinc could have been present in the retort charge before smelting, there being 50 g of zinc left in the spent residue.