Senses
矿石/ 礦石 ore
ore; rock from which useful minerals or metals can be extracted
矿石/ 礦石 crystal detector
(literary or archaic) crystals such as pyrite or galena used as a signal detector in early radio sets
矿石/ 礦石 stone needle
(archaic) stone needles used in ancient times for acupuncture or to treat sores and ulcers