History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c39.s2.t3.14
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c39.s2.t3.14
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v1.c39.s2.t3.14
Hegde has adduced conclusive proof for the geographical /geological basis regarding the development of the successive categories of potteries (1200-300 B.C.) in the Ganga-Yamuna basin (Hegde, 1987). Thick deposits of ferruginous, plastic, secondary clay in this area were laboriously elutriated to produce 10-100 µm clay particles, free from the larger and heavier particles (of feldspar, quartz, limestone etc.) and paste of this was used to produce the famous PGW or Painted Grey Ware. The black pigment on BSW (Black Slipped Ware) corresponded to magnetite (Fe3O4).