Kautilya's Arthashastra 2.12.2

2.12.2

parvatānām abhijñātoddeśānāṃ bilaguhopatyakālayanagūḍhakhāteṣv antaḥ prasyandino jambūcūtatālaphalapakvaharidrābhedaguḍa(gūḍa?).haritālamanaḥśilākṣaudrahiṅgulukapuṇḍarīkaśuka.mayūrapattravarṇāḥ savarṇodakauṣadhiparyantāś cikkaṇā viśadā bhārikāś ca rasāḥ kāñcanikāḥ //

Liquids which ooze out from pits, eaves, slopes, or deep excavations of well-known mountains; which have the colour of the fruit of rose-apple (jambu), of mango, and of fanpalm; which are as yellow as ripe turmeric, sulphurate of arsenic (haritála), honey-comb, and vermilion; which are as resplendent as the petals of a lotus, or the feathers of a parrot or a peacock; which are adjacent to (any mass of) water or shrubs of similar colour; and which are greasy (chikkana), transparent (visada), and very heavy are ores of gold (kánchanika). Likewise liquids which, when dropped on water, spread like oil to which dirt and filth adhere, and which amalgamate themselves more than cent per cent (satádupari veddhárah) with copper or silver.