History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c17.s4.t2.15
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c17.s4.t2.15
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v1.c17.s4.t2.15
At a later stage, the value of zinc was realised, sphalerite removed carefully from the lead ores and reduced/distilled in retorts leaving some residual slag. Pyrite used as flux precipitated in the crystalline slag as fayalite (Freestone et al, 1987).