味辛，寒。主疥 痂疡、白秃，杀皮肤中虱，堕胎，除热，杀金、银、铜、锡毒。熔化
还复为丹，久服，神仙、之死。生平土。
《名医》曰∶一名汞。生符陵，出于丹砂。
案∶《说文》云∶ ，丹沙所作为水银也。《广雅》云∶水银谓之汞。《淮南子·地形
训》云∶白 ，九百岁，生白 ；白 ，九百岁，生白金。高诱云∶白 ，水银也。
味辛，微寒。主中风寒热，心下逆气惊喘，口干苦焦，不能息，腹中坚痛，除邪鬼，产
乳，金创。生山谷。
《名医》曰∶一名细石。生齐山及齐卢山、鲁蒙山。采无时。
味辛，寒。主周痹风湿，肢节中痛，不可持物，洗洗酸消，除大热烦满及耳聋。一名元
石，生山谷。
《吴普》曰∶磁石，一名磁君。
《名医》曰∶一名处石。生太山及慈山山阴；有铁处，则生其阳。采无时。
案∶《北山经》云∶灌题之山，其中多磁石。郭璞云∶可以取铁。《管子·地数篇》云∶
山上有磁石者，下必有铜。《吕氏春秋·精通篇》云∶磁石召铁。《淮南子·训》云∶磁石能
引铁。只作慈，旧作磁，非。《名医》别出元石条，亦非。
味辛，寒。主身热，腹中积聚、邪气，皮中如火烧，烦满。水饮之，久服，不饥。一名
白水石。生山谷。
《吴普》曰∶神农∶辛；岐伯、医和、扁鹊∶甘，无毒；李氏∶大寒。或生邯郸。采
无时。如云母色（《御览》引云∶一名寒水石）。
《名医》曰∶一名寒水石，一名凌水石，盐之精也。生常案及凝山，又中水县邯郸。
《范子计然》云∶水石，出河东。色泽者，善。
【水银】
味辛，性寒。主治疥疮、痂疡、白秃（头部生癣脱发），杀灭皮肤中的虱子，能堕胎，清除热邪，解除金、银、铜、锡的毒性。将其熔化后重新炼制成丹药，长期服用，可成神仙或使人不死。产于平土之地。
《名医别录》记载：又名汞。产于符陵，由丹砂提炼而成。
考证：《说文解字》说：“ ，是丹砂所化的水银。”《广雅》说：“水银称为汞。”《淮南子·地形训》说：“白 ，经过九百年，生出白 ；白 ，经过九百年，生出白金。”高诱注释说：“白 ，就是水银。”
【凝水石】
味辛，性微寒。主治中风引起的寒热症状，心下气逆惊喘，口干口苦焦躁，呼吸不畅，腹部坚硬疼痛，驱除邪鬼之气，治疗产后乳疾和金创（金属利器造成的创伤）。产于山谷之中。
《名医别录》记载：又名细石。产于齐山、齐卢山、鲁蒙山。随时可以采集。
【磁石】
味辛，性寒。主治周痹风湿，肢体关节疼痛，无法持物，身体瑟瑟发冷酸痛，清除大热烦闷及耳聋。又名元石，产于山谷之中。
《吴普本草》记载：磁石，又名磁君。
《名医别录》记载：又名处石。产于泰山及慈山山的北面；有铁矿的地方，就生长在向阳面。随时可以采集。
考证：《北山经》说：“灌题山，其中多产磁石。”郭璞注释说：“可以用它来吸铁。”《管子·地数篇》说：“山上有磁石，下面一定有铜矿。”《吕氏春秋·精通篇》说：“磁石吸引铁。”《淮南子·修务训》说：“磁石能牵引铁。”只写作“慈”，旧作“磁”是不对的。《名医别录》另列元石条目，也是不对的。
【凝水石】
味辛，性寒。主治身体发热，腹中积聚邪气，皮肤如火烧般感觉，烦闷。用水送服，长期服用，不感到饥饿。又名白水石。产于山谷之中。
《吴普本草》记载：神农认为味辛；岐伯、医和、扁鹊认为味甘，无毒；李氏认为大寒。有的产于邯郸。随时可以采集。颜色如云母色（《太平御览》引用说：又名寒水石）。
《名医别录》记载：又名寒水石，又名凌水石，是盐的精气所化。产于常案山及凝山，以及中水县、邯郸。
《范子计然》说：“水石，出产于河东。色泽好的，品质优良。”
[Mercury]
Pungent in flavor, cold in nature. It primarily treats scabies (skin disease with itching and scaling), crusts, ulcers, and tinea capitis (fungal infection of the scalp causing hair loss); it kills lice in the skin; it induces abortion; it clears heat; and it neutralizes the toxicity of gold, silver, copper, and tin. When melted and refined back into cinnabar pills, long-term ingestion leads to immortality or eternal life. It is found in flat earth regions.
*The Classic of Famous Physicians* states: Also known as Gong (Mercury). It originates from Fuling and is derived from Cinnabar.
Note: *Shuowen Jiezi* states: " , produced from Cinnabar, is Mercury." *Guaya* states: "Mercury is called Gong." *Huainanzi · Dizhen Xun* states: "White , after nine hundred years, produces White ; White , after nine hundred years, produces White Gold." Gao You comments: "White , is Mercury."
[Ningshui Stone / Congealed Water Stone]
Pungent in flavor, slightly cold in nature. It primarily treats wind-stroke with alternating chills and fever, rebellious Qi in the epigastrium causing palpitations and panting, dry mouth with bitter and scorched sensations, dyspnea, hardness and pain in the abdomen, expels evil spirits, treats postpartum conditions involving milk, and heals metal wounds. It grows in mountain valleys.
*The Classic of Famous Physicians* states: Also known as Xi Shi (Fine Stone). It grows at Qi Mountain, Qilu Mountain, and Lumen Mountain. It can be harvested at any time.
[Magnetite]
Pungent in flavor, cold in nature. It primarily treats generalized bi-syndrome due to wind-dampness, pain in the limbs and joints, inability to hold objects, a sensation of cold shivering and soreness, clears severe heat, fullness, and deafness. Also known as Yuan Shi (Origin Stone), it grows in mountain valleys.
*Wu Pu's Materia Medica* states: Ci Shi (Magnetite), also known as Ci Jun (Magnetic Lord).
*The Classic of Famous Physicians* states: Also known as Chu Shi (Place Stone). It grows on the north side of Mount Tai and Ci Mountain; where there is iron, it grows on the sunny side. It can be harvested at any time.
Note: *Beishan Jing* states: "Mount Guanti, where Magnetite is abundant." Guo Pu comments: "It can be used to attract iron." *Guanzi · Dishu Pian* states: "Where there is Magnetite on the mountain, there must be copper underneath." *Lüshi Chunqiu · Jing Tong Pian* states: "Magnetite attracts iron." *Huainanzi · Xiawu Xun* states: "Magnetite can draw iron." It should only be written as "Ci" (Compassionate/Benevolent); the old form "Ci" (Magnetic) is incorrect. *The Classic of Famous Physicians* listing Yuan Shi as a separate entry is also incorrect.
[Ningshui Stone / Congealed Water Stone]
Pungent in flavor, cold in nature. It primarily treats body heat, abdominal accumulations and pathogenic Qi, a sensation of burning fire in the skin, and vexation/fullness. Taken with water, long-term ingestion prevents hunger. Also known as Baishui Shi (White Water Stone). It grows in mountain valleys.
*Wu Pu's Materia Medica* states: Shennong considered it pungent; Qibo, Yi He, and Bian Que considered it sweet and non-toxic; Li considered it extremely cold. Some sources say it grows in Handan. It can be harvested at any time. Its color resembles cloud mother-of-pearl (*Taiping Yulan* cites: also known as Hanshui Shi/Cold Water Stone).
*The Classic of Famous Physicians* states: Also known as Hanshui Shi (Cold Water Stone) and Lingshui Shi (Ice Water Stone), it is the essence of salt. It grows at Chang'an Mountain and Ning Mountain, as well as in Zhongshui County and Handan.
*Fan Zi Jiran* states: "Water Stone comes from Hedong. Those with good luster are superior."