\r自然钢\pd57.bmp\r
味辛，平，无毒。疗折伤，散血止痛，破积聚。生邕州山岩中出铜处，于坑中及石
间采得，方圆不定，其色青黄如铜，不从矿炼，故号自然铜。（今附）
臣禹锡等谨按日华子云∶自然铜，凉。排脓消瘀血，续筋骨，治产后血邪，安心，止惊
悸
图经曰∶自然铜，生邕州山岩中出铜处，今信州、火山军皆有之，于铜坑中及石间采之，
方
圆
不定，其色青黄如铜，不从矿炼，故号自然铜。今信州出一种，如乱铜丝状，云在铜矿中，
山气熏蒸，自然流出，亦若生银，如老翁须之类，入药最好。火山军者，颗块如铜，而坚重
如石，医家谓之 石，用之力薄。采无时。今南方医者说，自然铜有两、三体∶一体大如麻
黍，或多方解，累累相缀，至如斗大者，色煌煌明烂如黄金、 石，最上；一体成块，大小
不定，亦光明而赤；一体如姜、铁矢之类。又有如不冶而成者，形大小不定，皆出铜坑中，
击之易碎，有黄赤，有青黑者，炼之乃成铜也。据如此说，虽分析颇精，而未见似乱丝者耳
。又云∶今市人多以 石为自然铜，烧之皆成青焰如硫黄者是也。此亦有二、三种∶一种有
壳如禹余粮，击破其中光明如鉴，色黄类硫石也；一种青黄而有墙壁，或纹如束针；一种碎
理如团砂者，皆光明如铜，色多青白而赤少者，烧之皆成烟焰，顷刻都尽。今药家多误以此
为自然铜，市中所货往往是此。自然铜用多须 ，此乃畏火，不必形色，只此可辨也。
雷公云∶石髓铅即自然铜也。凡使，勿用方金牙，其方金牙真似石髓铅，若误饵，吐煞
人。
石髓铅，色似干银泥，味微甘。如采得，先捶碎，同甘草汤煮一伏时，至明漉出，摊令干。
入臼中捣了，重筛过，以醋浸一宿，至明，用六一泥泥瓷合子，约盛得二升以来，于文武火
中养三日夜，才干便用盖盖了，泥用火 两伏时，去土抉盖，研如粉用。若修事五两，以醋
两
镒为度。丹房镜源云∶可食之自然铜，出信州铅山县银场铜坑中，深处有铜矿，多年矿气结
成，似马 勃，色紫重，食之苦涩，是真自然铜。今人只以大碗石为自然铜，误也。别说云
∶谨按今辰州川泽中出一种形圆似蛇含，大者如胡桃，小者如栗，外青皮黑色光润，破之
与石无别，但比 石不作臭气尔，入药用殊验。
衍义曰∶自然铜，有人饲折翅雁，后遂飞去。今人打扑损，研极细，水飞过，同当归、
没药
各半钱，以酒调，频服，仍以手摩痛处。
自然铜
味辛，性平，无毒。治疗折伤，散血止痛，破除积聚。产于邕州山岩中出铜的地方，在矿坑中和石缝间采集得到，形状方圆不定，颜色青黄像铜一样，不经过矿石冶炼，所以叫自然铜。（现在附注）
臣禹锡等人谨按：日华子说：自然铜，性凉。能排脓消除瘀血，接续筋骨，治疗产后血邪，使心神安宁，止住惊悸。
《图经》说：自然铜，产于邕州山岩中出铜的地方，现在信州、火山军都有出产，在铜矿坑中和石缝间采集，形状方圆不定，颜色青黄像铜一样，不经过矿石冶炼，所以叫自然铜。现在信州出产一种，像乱铜丝的样子，据说在铜矿中，受山气熏蒸，自然流出，也像生银，像老翁胡须之类，入药最好。火山军出产的，颗粒块状像铜，但坚硬沉重像石头，医家称为“石”，用药力较弱。采集没有固定时间。现在南方医生说，自然铜有两三种：一种是大小如麻籽黍米，或者多方解，累累相连缀，大到斗大，颜色辉煌明亮像黄金、石，最上等；一种成块状，大小不定，也光明而赤色；一种像姜、铁矢之类。又有像未经冶炼而成的，形状大小不定，都出自铜矿坑中，敲击容易破碎，有黄赤色的，有青黑色的，冶炼后成为铜。根据这样的说法，虽然分析很精细，但没有见到像乱丝那样的。又说：现在市场上很多人用“石”冒充自然铜，烧它都产生青色火焰像硫黄的是这类。这也有两三种：一种有壳像禹余粮，击破其中光明如镜，颜色黄类硫石；一种青黄而有墙壁（纹理），或纹路像束针；一种碎理像团砂的，都光明如铜，颜色多青白而赤少，烧之都成烟焰，顷刻全部烧尽。现在药商多误以此当作自然铜，市场上售卖的往往是这种。自然铜使用大多需要煅制，这是畏火，不必看形色，只凭这一点可以辨别。
雷公说：石髓铅就是自然铜。凡是使用，不要用方金牙，那方金牙真像石髓铅，如果误服，会毒死人。
石髓铅，颜色像干银泥，味道微甘。如果采得，先捶碎，同甘草汤煮一个时辰，到第二天捞出，摊开晾干。放入臼中捣碎，重新筛过，用醋浸泡一夜，到第二天，用六一泥涂抹瓷合子，大约盛得二升左右，在文武火中养三昼夜，才干便用盖子盖好，泥用火炼两个时辰，去掉泥土揭开盖子，研成粉末使用。如果修治五两，以醋两镒为限度。《丹房镜源》说：可食用的自然铜，出自信州铅山县银场铜矿坑中，深处有铜矿，多年矿气结成，像马勃，颜色紫重，食用苦涩，是真自然铜。现在人只把大碗石当作自然铜，是错误的。别说云：谨按现在辰州川泽中出产一种形状圆像蛇含，大的像胡桃，小的像栗子，外皮青黑色光润，破开与石头没有区别，只是比石不作臭气罢了，入药使用特别有效。
《衍义》说：自然铜，有人喂给折断翅膀的大雁，后来就飞走了。现在人打扑损伤，研极细，水飞过，同当归、没药各半钱，用酒调服，频服，仍以手按摩痛处。
Natural Copper Pyrite (Ziran Tong)
Pungent in flavor, neutral in nature, non-toxic. Treats fractures and injuries, disperses blood stasis, alleviates pain, and breaks up accumulations. It is found in the copper-bearing rock cliffs of Yongzhou, collected from pits and crevices among stones. Its shape varies in roundness or squareness, its color is greenish-yellow resembling copper, and it is not smelted from ore, hence the name Natural Copper Pyrite. (Currently appended)
Minister Yuxi et al. respectfully note: Rihua Zi states that Natural Copper Pyrite is cool in nature. It expels pus, resolves blood stasis, reconnects bones and tendons, treats postpartum blood pathogenic factors, calms the mind, and stops palpitations and fright.
The *Illustrated Classic* states: Natural Copper Pyrite originates from copper-bearing rock cliffs in Yongzhou; it is now also found in Xinzhou and Huoshan Jun. It is collected from copper pits and stone crevices. Its shape varies, its color is greenish-yellow like copper, and it is not smelted from ore, hence the name Natural Copper Pyrite. A variety produced in Xinzhou resembles tangled copper wires; it is said to naturally exude from copper ores under the influence of mountain vapors, similar to native silver or old man's beard, which is considered best for medicinal use. Those from Huoshan Jun are nodular and copper-like but hard and heavy as stone; physicians refer to this as "Shi" (Stone), which has weaker therapeutic efficacy. There is no fixed time for collection. Physicians in the south state that Natural Copper Pyrite comes in two or three types: one type is small like hemp seeds or millet, often clustered together, up to the size of a dou, with a brilliant golden luster like gold or pyrite, considered the highest grade; another type forms irregular blocks, bright and reddish; a third type resembles ginger or iron arrowheads. Another form appears unsmelted, varying in size, all from copper pits, brittle when struck, appearing yellow-red or green-black, becoming true copper after smelting. Although this description is detailed, it does not mention the wire-like variety. Furthermore, it is noted that many in the market substitute "Shi" (Stone) for Natural Copper Pyrite; when burned, these produce a blue flame resembling sulfur. This substitute also has varieties: one has a shell like *Yuyuliang* (Halloysitum Rubrum), breaking open to reveal a mirror-like interior with a yellow color like sulfur stone; another is greenish-yellow with wall-like structures or needle-bundle patterns; a third has granular textures like sand clumps. All shine like copper, mostly greenish-white with little red, burning completely into smoke and flame instantly. Many herbalists mistakenly identify this as Natural Copper Pyrite, and such substitutes are common in markets. When using Natural Copper Pyrite, calcination is usually required because it fears fire; this property distinguishes it regardless of appearance.
Lei Gong states: Shisuilian (Medulla Plumbi) is Natural Copper Pyrite. When using it, do not use Fangjinya (Square Gold Tooth); although Fangjinya resembles Shisuilian, accidental ingestion can be fatal.
Shisuilian resembles dry silver mud and has a slightly sweet taste. Upon collection, it should first be crushed, then boiled in Licorice Decoction (*Gancao Tang*) for one shichen (two hours). The next day, strain and spread out to dry. Pound in a mortar, sieve again, soak in vinegar overnight. The next day, coat a porcelain vessel with Liuyi Ni (Six-One Mud), hold about two sheng, and nurture over mild heat for three days and nights until dry. Seal with a lid, apply mud, and fire for two fushi (four hours). Remove the mud, lift the lid, and grind into powder. For processing five liang, use two yi of vinegar. *Danfang Jingyuan* states: Edible Natural Copper Pyrite is found in the copper pits of Yinchang, Qianshan County, Xinzhou. Deep within the copper mines, formed by years of mineral vapor accumulation, it resembles *Mapo* (Marasmius), is purple and heavy, tastes bitter and astringent when eaten, and is the true Natural Copper Pyrite. People today mistakenly use large bowl-shaped stones as Natural Copper Pyrite, which is incorrect. Bieshuo notes: In the rivers and marshes of Chenzhou, a variety grows round like *Shehan* (Ophiopogon japonicus tuber), large ones like walnuts, small ones like chestnuts. The outer skin is greenish-black and glossy. Broken open, it looks like stone but lacks the foul odor of Shi (Stone); it is highly effective medicinally.
*Yanyi* states: Natural Copper Pyrite was used by someone to feed a wild goose with broken wings, which subsequently flew away. Currently, for trauma and contusions, it is ground extremely fine, washed with water, mixed with equal parts of Angelica Sinensis Root (*Danggui*) and Myrrh (*Moyao*), each half qian, taken frequently with wine, while massaging the painful area.