Minerals and Metals in Ancient India v1.c19.s6.t8.1

v1.c19.s6.t8.1

Several powdery materials were found carefully stored. Chemical analysis suggested that these different materials could be (a) mixture of lime, brick powder and clay possibly used as mortar and plastering the walls, (b) mixture of lime and sand, (c) mixture of clay and sand used either for plastering or for making pottery, (d) fine-grained white powdery material assaying 40.6 per cent CaO and 9.3 per cent MgO possibly a mixture of lime (now converted to CaCO₃) and talc used as pigment for painting.