Charak Samhita
हेमाद्याः सूर्यसन्तप्ताः स्रवन्ति गिरिधातवः। जत्वाभं मृदुमृत्स्नाच्छं यन्मलं तच्छिलाजतु ॥५६॥
The rocky ores of gold etc., when heated by the sun ooze a material like lac, soft, smooth and clear.
english translation
hemAdyAH sUryasantaptAH sravanti giridhAtavaH। jatvAbhaM mRdumRtsnAcchaM yanmalaM tacchilAjatu ॥56॥
hk transliteration by Sanscript