[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Minerals and Metals in Ancient India](https://indike.org/pramana/ins.science.biswas-1996) › v1.c19.s5.t5.1 # Minerals and Metals in Ancient India v1.c19.s5.t5.1 Minerals and Metals in Ancient India v1.c19.s5.t5.1 - **Language:** English ### [v1.c19.s5.t5.1](https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t5.1) A small piece of glass was examined and analysed. It was dark green in colour. It is obvious that it formed part of a bottle or some other receptacle. The results of chemical analysis give 56.96 per cent SiO₂, 4.46 per cent Fe₂O₃, 3.62 per cent Al₂O₃, 1.09 per cent Cr₂O₃, 1.06 per cent PbO, 0.89 per cent SnO₂, 7.00 per cent CaO, 3.75 per cent MgO, 17.55 per cent Na₂O and 4.09 per cent K₂O. - [Previous: v1.c19.s5.t4.8](https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t4.8) - [Next: v1.c19.s5.t5.2](https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t5.2) - [Up: v1.c19.s5.t5](https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t5) --- Source: [https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t5.1](https://indike.org/pramana/ins.science.biswas-1996.v1.c19.s5.t5.1) · Pramāṇa