Anandakanda 2.1.9

2.1.9

ete uparasāḥ khyātā rasarājasya karmaṇi /
<dvādaśa lohāḥ>
svarṇarūpyārkakāntābhrasattvaṃ tīkṣṇaṃ ca muṇḍakam //

these are known as secondary minerals in the operations on the king of mercuries.
<The twelve metals>
Gold, silver, copper, magnetic iron, essence of mica, cast iron, muṇḍa iron,