Minerals and Metals in Ancient India v2.c45.s7.5
Minerals and Metals in Ancient India v2.c45.s7.5
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v2.c45.s7.5
Calamine was supposed to be purified by roasting and plunging in acidic lemon juice, urine, or sour gruel (2.154-155). Zinc ore of Rajasthan occurs in calcitic and dolomitic gangue. Probably the operation recommended in RRS removed carbonates by thermal decomposition and acidic dissolution. Smelting involved reduction-roasting of zinc ore with carbonaceous materials and borax in brinjal-shaped crucible or vṛntāka mūṣā:
Linked texts (1)
- Rasaratnasamuccaya — Vāgbhaṭa (alchemist), Sanskrit