无毒 土生
光明盐主头面诸风目赤痛多眵（音蚩）泪（名医所录）【名】石盐 圣石【地】（图经曰）
生
盐州五原盐池下凿取之大者如升皆正方光澈又阶州一种生山石中不由煎炼自然成盐色甚明莹
彼人甚贵之云即光明盐也【时】（生）无时（采）无时【用】白净光澈者佳【质】类方解石
【色】
白
无毒 土石生
绿盐主目赤泪出肤翳眵暗（名医所录）【地】（图经曰）以光明盐 砂青铜屑酿之为块而
色
绿其真有出焉耆国水中石下取之状若扁青空青（别录云）波斯国在石上生按舶上将来为之石
绿
装色久而不变中国以铜醋造者不堪入药色亦不久【时】（生）无时（采）无时【用】绿色成
块者
好【质】状如扁青空青【色】绿【味】咸苦辛【性】平【气】味浓于气阴中之阳【臭】朽【主】
明目消翳【制】研细用【治】（疗）（海药云）治小儿无辜疳气
有毒 土生
铁主坚肌耐痛（神农本经）【地】（图经曰）单言铁者 铁也诸铁不着所出州土今江南西
蜀
有炉冶处皆有之铁乃黑金也其体坚重至于熔冶然后成器盖铁有生有熟有钢有精有落有粉并华
粉胤粉之类祈文立条而 铁乃再三拍打以作 者亦谓之熟铁也【时】（采）无时【用】 铁
【质】
类磁石【色】黑【味】辛【性】平散【气】气之薄者阳中之阴【臭】腥【反】畏磁石锻石炭
【解】制石亭脂毒
【光明盐】
无毒，产于土中。
光明盐主治头面部各种风邪引起的目赤肿痛、多眼屎（音蚩）、流泪（名医所录）。【名称】石盐、圣石。【产地】《图经》记载：产于盐州五原盐池下方挖掘取得。大的如升，都是正方形，光洁透明。另外阶州有一种生长在岩石中，不需要煎炼，自然成盐，颜色非常明亮晶莹，当地人非常珍视它，说这就是光明盐。【采收时间】（生长）随时都有。（采集）随时都可以。【用法】以白净、光洁透明者为佳。【质地】类似方解石。【颜色】白色。
【绿盐】
无毒，产于土石中。
绿盐主治目赤流泪、皮肤翳障、眼屎昏暗（名医所录）。【产地】《图经》记载：用光明盐和砂青铜屑酿造成块状而呈绿色，其中真正天然产出的在焉耆国水中石头下取得，形状像扁青、空青（《别录》云）；波斯国出产的长在石头上，按从船上运来的称为石绿。其颜色持久不变。中国用铜和醋制造的则不堪入药，颜色也不持久。【采收时间】（生长）随时都有。（采集）随时都可以。【用法】以绿色成块的为好。【质地】形状像扁青、空青。【颜色】绿色。【味道】咸、苦、辛。【性质】平。【气味】气味浓于气，属于阴中之阳。【气味特征】腐朽味。【主要功效】明目、消除翳障。【炮制】研细使用。【治疗】（据《海药本草》云）治疗小儿无辜疳气。
【铁】
有毒，产于土中。
铁主治使肌肉坚实、耐受疼痛（《神农本经》）。【产地】《图经》记载：单称“铁”的就是铁。各种铁不局限于特定出产的州土，如今江南、西蜀有炉冶的地方都有。铁被称为黑金，它的体质坚硬沉重，必须经过熔炼才能制成器物。铁有生铁、熟铁、钢、精铁、落铁、粉铁以及华粉、胤粉之类，祈文立条列举了这些种类。铁是经过再三拍打以制作成的，也称为熟铁。【采收时间】（采集）随时都可以。【用法】铁。【质地】类似磁石。【颜色】黑色。【味道】辛。【性质】平散。【气味】气较薄，属于阳中之阴。【气味特征】腥味。【相反/禁忌】畏磁石、锻石、炭。【解毒】能解除石亭脂的毒性。
[Guangming Yan (Light Salt)]
Non-toxic, produced in the earth.
Guangming Yan (Light Salt) [Rock Salt] primarily treats various wind pathogens affecting the head and face, causing redness and pain of the eyes, excessive eye discharge (pronounced 'chi'), and tearing (Recorded by Famous Physicians). [Names] Shi Yan (Stone Salt), Sheng Shi (Holy Stone). [Origin] According to *Tu Jing* (Illustrated Classic): Produced by digging below the Yanyuan Salt Pool in Yanzhou State. The large pieces are like a sheng (unit of measure), all square-shaped, bright and transparent. Additionally, Jiazhou has a type growing in mountain rocks, formed naturally without boiling or refining, with very clear and bright color; locals highly value it, saying this is Guangming Yan. [Harvesting Time] (Growth) Available at any time. (Collection) Collectible at any time. [Usage] White, clean, bright, and transparent pieces are preferred. [Texture] Similar to Calcite. [Color] White.
[Lv Yan (Green Salt)]
Non-toxic, produced in earth and stone.
Lv Yan (Green Salt) primarily treats red eyes, tearing, skin nebulae, and dim eye discharge (Recorded by Famous Physicians). [Origin] According to *Tu Jing*: Made into blocks by fermenting Guangming Yan with bronze powder from sand, resulting in a green color. The truly natural ones are found under stones in water in Yanqi Kingdom, resembling Bian Qing (Blue Malachite) and Kong Qing (Hollow Malachite) (According to *Bie Lu*); those from Persia grow on stones. Those brought by ship are called Shi Lv (Stone Green). Their color remains unchanged over time. Those manufactured in China using copper and vinegar are unsuitable for medicinal use, and their color does not last long. [Harvesting Time] (Growth) Available at any time. (Collection) Collectible at any time. [Usage] Green, solid blocks are good. [Texture] Shape resembles Bian Qing and Kong Qing. [Color] Green. [Taste] Salty, Bitter, Pungent. [Nature] Neutral. [Qi and Flavor] The flavor is stronger than the qi; belongs to Yin within Yang. [Odor] Rotten odor. [Main Efficacy] Brightens the eyes, eliminates nebulae. [Processing] Grind into fine powder for use. [Treatment] (According to *Hai Yao Ben Cao*) Treats infantum malnutrition (Wugu Gan Qi) in children.
[Tie (Iron)]
Toxic, produced in the earth.
Tie (Iron) [Ferrous Metal] primarily firms muscles and increases tolerance to pain (Shennong Ben Cao). [Origin] According to *Tu Jing*: When referred to simply as "Iron," it means Iron. Various types of iron are not limited to specific provinces. Currently, wherever there are smelting furnaces in Jiangnan and Western Shu, iron is available. Iron is known as Black Gold. Its body is hard and heavy; only after smelting can it be fashioned into vessels. There are raw iron, cooked iron, steel, refined iron, fallen iron, powdered iron, as well as Hua Fen (Flower Powder), Yin Fen (Seed Powder), etc., listed by Qi Wenli. Iron that is beaten repeatedly to make it is also called cooked iron. [Harvesting Time] (Collection) Collectible at any time. [Usage] Tie (Iron). [Texture] Similar to Magnetite. [Color] Black. [Taste] Pungent. [Nature] Neutral and dispersing. [Qi and Flavor] The qi is thin; belongs to Yin within Yang. [Odor] Fishy smell. [Antagonism/Fear] Feels adverse to Cishi (Magnetite), Duanshi (Smelted Stone), and Tan (Charcoal). [Detoxification] Resolves the toxicity of Shiting Zhi (Stalactite).