सुवर्णरजतवज्रमणिमुक्ताप्रवालशङ्खलोहलवणभूमिप्रस्तररसधातवः खनिः ॥ कZ_०२.६.०४ ॥
suvarṇarajatavajramaṇimuktāpravālaśaṅkhalohalavaṇabhūmiprastararasadhātavaḥ khaniḥ
Mines (khani) are sources of revenue through: gold, silver, diamond, gems, pearls, coral, conch-shells, metals, salt, earths/clays, stone, mineral essences, and ores.
Because the administrative category is ‘extractive sources’—anything obtained from controlled natural deposits or extraction zones that can be taxed, monopolized, or leased.