Rasarnava 8.60

8.60

rasatālakaśaṅkhābhraciñcākṣāraistathā trapuḥ
mṛtaṃ nāgaṃ mṛtaṃ vaṅgaṃ śulvaṃ tīkṣṇaṃ ca vā mṛtam
ekaikamuttame hemni vāhayet suravandite //

With mercury, orpiment, conch shell, mica, and alkali of tamarind, as well as tin, / calcined lead, calcined tin, copper, or calcined wrought iron, / one should introduce each singly into excellent gold, O you who are adored by the gods.