重、镇惊、劫痰消积。
辛平。有小毒。感银铅之气而结。坠痰镇惊。止血散肿。消积杀虫。疗肿毒。解狐臭。
（油
调搽腋、或以馒头蒸热劈开、掺末夹腋下、亦佳。）灭瘢 。染髭须。疗疟痢五痔。金疮冻
疮。（熟桐油调敷。）食之令人寒中。出银坑。难得。今用者。乃倾银炉底。入药煮一伏时。
重、平肝、通、下行。
辛平有毒。治目中障瘀。腐蚀坏肉。妇人生产横逆。心腹痛。月隔。五淋。或烧醋淬。
或煮
汁。（唇 黑、痛痒不可忍、于石上磨猪脂汁涂之、不过数遍、愈、目猝不见、石上磨汁、
注中。 、肿也。）
重、坠痰镇惊。
辛平有毒。镇心平肝。定惊疗狂。消痈解毒。（时珍曰∶凡诸药皆忌铁器、而补肾药尤
忌之
。）畏慈石、皂荚。（皂荚木、作薪则釜裂。） 时砧上打落者。名铁落。（即铁屑、素问用治
怒狂、研粉敷癣、甚效。）如尘飞起者。名铁精。器物生衣者。名铁锈。盐醋浸出者。名铁
华。（时珍曰∶大抵借金气以平木、坠下解毒、无他义也。）
针砂（重、消水肿。）消水肿黄胆。散瘿瘤。乌须发。此是作针家磨 细末也。须
真钢砂乃堪
用。（人多以柔铁砂杂和之、飞为粉、人莫能辨。）以上金类。
重、下气。
甘平。色白。入肺下气。坚肌续绝。治疟痢痈疽。（同黄丹熬膏贴之、千金翼、用敷金
疮。）
有五色。以色白光莹者为上。泽泻为使。恶羊肉。（金疮出血、云母粉傅之、绝妙。）
(Mi Tu Seng, Litharge) possesses heavy and sedative properties; it settles fright, eliminates phlegm, and resolves accumulations.
Pungent in flavor, neutral in nature. It has slight toxicity. It forms through the interaction of silver and lead vapors. It descends phlegm, calms fright, stops bleeding, dissipates swelling, resolves accumulations, kills parasites, treats sores and toxic swellings, and relieves bromhidrosis (fox odor).
(Apply mixed with oil to the armpits, or steam a steamed bun, split it open, sprinkle the powder inside, and clamp it under the armpit; this is also effective.) Removes scars. Dyes eyebrows and beard. Treats malaria, dysentery, and five types of hemorrhoids. For metallic wounds and frostbite. (Apply mixed with refined tung oil.) Ingestion causes coldness in the middle jiao (middle burner). It originates from silver mines and is rare. The material used today is the dross poured from the bottom of silver smelting furnaces, boiled for one double-hour (two hours) before use.
(Yun Mu, Mica) possesses heavy and sedative properties; it pacifies the Liver, unblocks obstructions, and directs Qi downward.
Pungent in flavor, neutral in nature, and toxic. It treats visual obscurations and blood stasis in the eyes. It corrodes necrotic tissue. It treats difficult labor, abnormal fetal presentation, epigastric and abdominal pain, amenorrhea, and five types of strangury. It can be calcined and quenched in vinegar, or boiled to extract the juice. (If the lips turn black and are unbearable in pain and itching, grind pig fat on a stone and apply the juice; it heals after a few applications. If vision is suddenly lost, grind the mineral on a stone, extract the juice, and instill into the eye.) (Note: "Zhong" refers to swelling.)
(Tie Luo, Iron Filings) possess properties of descending phlegm and calming fright.
Pungent in flavor, neutral in nature, and toxic. They calm the Heart and pacify the Liver. They settle fright and treat mania. They resolve abscesses and detoxify. (Li Shizhen stated: Most herbs avoid iron vessels, but those tonifying the Kidney especially must avoid them.) They are incompatible with Ci Shi (Magnetite) and Zao Jia (Gleditsia sinensis fruit). (Burning Gleditsia wood as fuel causes pots to crack.) The filings struck off an iron anvil are called Tie Luo (Iron Filings). (These are iron shavings; the *Su Wen* uses them to treat manic rage; ground into powder and applied to tinea, they are very effective.) Those that rise like dust are called Tie Jing (Iron Essence). Rust on utensils is called Tie Xiu (Iron Rust). Those precipitated by salt and vinegar are called Tie Hua (Iron Flowers). (Li Shizhen stated: Generally, they utilize the metal element's descending nature to subdue Wood [Liver], causing descent and detoxification, without other profound meanings.)
(Zhen Sha, Needle Sand) possesses heavy properties and resolves edema. It resolves edema-related jaundice. Dissipates goiter and tumors. Blackens hair. This is the fine powder produced by needle-makers during grinding. Only true steel sand is suitable for use. (People often mix soft iron sand to counterfeit it, flying it into powder, which others cannot distinguish.) The above belong to the Metal category.
(Yun Mu, Mica) has the function of directing Qi downward.
Sweet in flavor, neutral in nature. Its color is white. It enters the Lung meridian to direct Qi downward. It consolidates muscle tissue and reconnects severed tendons/bones. It treats malaria, dysentery, carbuncles, and sores. (Boiled together with Huang Dan (Lead Oxide) to make a plaster for application; cited from *Qian Jin Yi Fang*, used for dressing metallic wounds.)
Mica comes in five colors. The best quality is white, lustrous, and crystal-clear. Ze Xie (Alisma rhizome) serves as its guiding herb. It is incompatible with mutton. (For metallic wound bleeding, applying Mica powder externally is excellent.)