甘、咸，平。有青白二种，以青者为佳，坚细而青黑，打开中有白星点， 后则星
麸金。其无星点
斤簇定， 至硝
酸、涩，平。体至坚重，色如硫黄，形块有极大者，人镌为器用。黄石中间有淡白
以此得花之名，以罐固济，火 过，出火毒，研细，水飞，晒干用。
酸、辛，寒，有毒。其状如翠，琉璃而有白文，易破折者真，研极细末用。水英为使
畏白薇、芫花、菌桂、牡桂、辛夷。
图经云∶石胆最上，出蒲州，大者如拳，小者如桃栗，击之纵横解，皆成叠文，色青，
见风久
草云∶伪者以醋揉青矾为
恶石胆合硝石销溜而成之，块大色浅浑浑无脉理，击之则碎，无廉棱者是也。又气扶石
者
咸、微辛，寒。须以水化，澄去脚滓，煎炼白色，入药乃良。漏芦为使。
甘、咸，寒。其形作块，方圆大小不常，方棱明莹青色者佳。
咸、辛，大寒。朴硝生于斥卤之地，彼人刮扫煎汁，经宿结成，状如末盐，犹有沙土
杂，须再煎炼入药。
滓脚，用萝卜一斤切
净，放瓦盆内，星月下露一夜，
锋，谓之芒硝；底少而上面生牙，如圭角，作
如白石英，又名英硝。二硝之底则通名朴硝。取芒硝、英硝，再
甜硝。以二硝置之风日中，吹去水气，则轻白如粉，即为风化硝。以芒硝∶英硝同
鼎罐升 ，则为玄明粉。石苇为使，恶麦句姜，畏三棱。
制玄明粉法∶用白净朴硝十斤，清水一桶，煎化去滓，星月下露一夜，去水取硝，每一
斤用
再露一夜，取出以大沙
文至武 之，待沸定，以瓦一片盖口，仍
隔纸安地上，盆覆三日，出火毒，研末，每一斤入生甘草
收用。
（青礞石）味甘、咸，性平。有青色和白色两种，以青色的为佳，质地坚硬细致且呈青黑色，打开后里面有白色的星点，后来则变成像麸皮一样的金色星点。那些没有星点的……（原文此处似有缺漏或错简，指非佳品）。
（石硫黄）味酸、涩，性平。质地非常坚硬沉重，颜色像硫黄一样，形状块状有极大的，人们雕刻成器具使用。黄石中间有淡白色的纹理，因此得名“花”。用罐子密封加固，用火煅烧过，去除火毒，研磨细，用水飞法处理，晒干后使用。
（石胆）味酸、辛，性寒，有毒。其形状像翠鸟羽毛般的琉璃，且有白色纹理，容易破碎折断的是真品，研磨成极细的粉末使用。以水英为使药。畏白薇、芫花、菌桂、牡桂、辛夷。《图经本草》说：石胆品质最好的，出产于蒲州，大的像拳头，小的像桃子和栗子，敲击时纵横裂开，都形成层叠的纹理，颜色青，见风久了……（原文此处似有缺漏）。李时珍《本草纲目》云：伪品是用醋揉搓青矾制成……恶石胆与硝石熔化溜制而成，块大颜色浅浑浊无纹理，敲击则碎，没有棱角的就是伪品。又有气扶石……（原文此处似有缺漏）。
（绿矾/皂矾）味咸、微辛，性寒。必须用水溶解，澄清去掉底部的渣滓，煎炼成白色，入药才好。以漏芦为使药。
（玄精石）味甘、咸，性寒。其形状作块状，方圆大小不固定，方棱明亮莹润青色的为佳。
（朴硝）味咸、辛，性大寒。朴硝生长在盐碱之地，当地人刮扫煎煮汁液，过夜结成，形状像末盐，还混杂有沙土杂质，需要再煎炼后入药。……（原文此处似有缺漏，涉及制芒硝之法，如用萝卜一斤切片等）。
（芒硝/英硝）……锋，称为芒硝；底部少而上面生牙，像圭角一样，像白石英，又名英硝。二硝的底层则通称为朴硝。取芒硝、英硝，再……甜硝。将二硝放置在风日中，吹去水气，则轻白如粉，即为风化硝。以芒硝、英硝同……鼎罐升华，则为玄明粉。以石苇为使药，恶麦句姜，畏三棱。
制玄明粉法：用白净朴硝十斤，清水一桶，煎化去掉渣滓，在星月下露一夜，去掉水分取硝，每一斤……再露一夜，取出后用大沙……文至武火之，待沸腾稳定，用一片瓦盖住口，仍然隔纸安放在地上，盆覆盖三天，去除火毒，研磨成末，每一斤加入生甘草……收存使用。
(Qingmengshi / Calcareous Schist) Sweet and salty, neutral in nature. There are two types: green and white, with the green variety being superior. It is hard, fine, and dark green; when broken open, it contains white star-like spots, which later turn into bran-like golden flecks. Those without star spots... [Text appears incomplete/corrupted].
(Shiuhuang / Native Sulfur) Sour and astringent, neutral in nature. The texture is extremely hard and heavy, color resembling sulfur. The blocks can be very large, and people carve them into utensils. Yellow stone with pale white veins in the middle is named "Flower" (Huahuang). It is sealed in a jar, calcined by fire to remove "fire toxicity," ground finely, processed by water levigation (shui fei), and dried for use.
(Shidan / Copper Vitriol) Sour and acrid, cold in nature, toxic. Its appearance resembles kingfisher feathers or glaze with white veins. Genuine material breaks easily; it should be ground into an extremely fine powder. Use Shuiying as an assistant herb. It is incompatible with Baiwei, Yuanhua, Jungui, Mugui, and Xinyi. *Tujing* states: The best Shidan comes from Puzhou. Large pieces are fist-sized, small ones peach- or chestnut-sized. When struck, they split longitudinally and transversely, forming layered textures. The color is green... [Text appears incomplete]. Li Shizhen (*Bencao Gangmu*) notes: Counterfeits are made by kneeling Qingfan (Green Alum) with vinegar... They are formed by melting Shidan and Xiaosha (Niter) together. These fake pieces are large, pale, cloudy, lack grain structure, shatter upon striking, and have no sharp edges. There is also Qifushi... [Text appears incomplete].
(Lvfan / Green Vitriol) Salty and slightly acrid, cold in nature. It must be dissolved in water, clarified to remove sediment, and refined until white before being suitable for medicinal use. Loulu is used as an assistant herb.
(Xuanjingshi / Crystal Rock) Sweet and salty, cold in nature. It forms into blocks of irregular size and shape. Those that are square-edged, bright, translucent, and green are considered superior.
(Puxiao / Crude Mirabilite) Salty and acrid, intensely cold in nature. Puxiao grows in saline-alkali lands. Locals scrape and boil the brine, which crystallizes overnight. It resembles powdered salt but is mixed with sand and soil impurities, requiring further refining before medicinal use... [Text regarding processing with radish appears fragmented].
(Mangxiao / Refined Mirabilite / Yingxiao)... [Fragmented text describing crystal shapes]. The sharper edges are called Mangxiao; those with fewer crystals at the bottom and tooth-like growths on top, resembling jade artifacts, look like white quartz and are also known as Yingxiao. The residue at the bottom of both is collectively called Puxiao. Taking Mangxiao and Yingxiao, and further processing them... yields Tianxiao (Sweet Niter). Placing these nitrates in wind and sun to evaporate moisture results in a light, white powder called Fenghuaxiao (Weathered Niter). Combining Mangxiao and Yingxiao in a vessel and sublimating them produces Xuanmingfen (Refined Mirabilite Powder). Shiwei is used as an assistant herb. It is incompatible with Maijujiang and fears Sanleng.
Method for preparing Xuanmingfen: Take 10 jin of pure white Puxiao and one bucket of clear water. Boil until dissolved, filter out dregs, and expose to stars and moon overnight. Remove water to obtain the nitrate. For every jin... expose to night dew again for one night. Take out and place in large sand... apply heat from gentle to strong. Once boiling stabilizes, cover the mouth with a tile, still placed on paper on the ground, and cover with a basin for three days to remove fire toxicity. Grind into powder. For every jin, add raw Gancao (Licorice Root)... and store for use.