Minerals and Metals in Ancient India v2.c44.s3.15
Minerals and Metals in Ancient India v2.c44.s3.15
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v2.c44.s3.15
Alchemists like Nāgārjuna were interested in the therapeutic use of metallic salts of mercury (*rasa*), zinc (*rasaka*), etc. Minerals or metal salts were stated to provide hardness to metal as well as to body :