Anandakanda 1.7.143

1.7.143

sthairyaṃ dārḍhyaṃ ca dhātūnāṃ balavacca rasāyanam /
<abhrakotpattiḥ tadbhedā lakṣaṇañca>
athābhrakaṃ pravakṣyāmi tadutpattyādikaṃ kramāt //

imparting stability and firmness to the tissues, and a potent rasāyana.
<Origin of mica, its varieties, and characteristics>
Now I shall speak of mica, its origin and so forth in order.