| | zi ran tong﹐pyritum 自然銅 (in English and Chinese 中英文) by: Joe Hing Kwok Chu zi ran tong literally means natural copper; but it has nothing to do with copper. It is iron pyrites. Its chemical formula is FeS2. It also contains some trace mineral like nickle, arsenic and antimony. In prescription, zi ran tong refers to unprocessed iron pyrites which has been cleaned of sand, rocks and impurities. Duan zi ran tong, also called duan ran tong, are those pieces of zi ran tong that have been heated till bright red and dipped into rice vinegar and smashed. 自然銅跟銅沒關係。它是二硫化鐵 。 分子式為 FeS2。 學名叫做「黃鐵礦」。並含有鎳﹐砷﹐銻等少量元素。 處方中之自然銅指生自然銅。為礦石去除泥土﹐碎石與雜物後，生用入藥者。鍛自然銅又名鍛然銅。為自然銅塊燒至紅透，放入米醋中浸淬後，打碎入藥者。 | Pharmaceutical name: | Pyritum | | Chemical name: | iron pyrites | | Pron. in Japanese: | shizendo | | Pron. in Korean: | chayondong | | Pron. in Cantonese: | ji jin tong | | Common Name: | pyrite﹐ fool's gold | | Distribution: | Sichuan, Guangdong, Jiangsu, Yunnan and all over the world | | Properties (characteristics):性味﹕ | acrid, neutral 辛, 平。 | | Channels (meridians) entered﹕ 歸經﹕ | kidney and liver 入腎與肝經。 | | Actions & Indications: 效用﹕ | for dispersing heat and controlling pain, breaking blood clots, promoting the healing of broken bones and sinews, fractures of bones, wounds caused by sharp objects. 散熱鎮痛﹐破積消瘀﹐續筋接骨。主治金瘡跌打損傷﹐筋骨折傷﹐瘀滯疼痛。 | | Medical Function: | | | Chemical ingredients: 化學成份﹕ | Ferrous bisulfide (FeS2) and some trace amount of cooper, nickle, arsenic and antimony. 二硫化鐵 ( FeS2) 並含有鎳﹐砷﹐銻﹐銅等少量元素。 | | Dosage: 用量﹕ | 3 to 9 g. Boil this item first when use in decoction or can be made into pills or powder form. 三至九克 用法﹕先煎，或研末入丸散劑服。
| | Samples of formulae: | to be loaded | | Modern Research: | to be loaded | | Cautions: 禁忌﹕ | not to use on those who are yin deficient with heat or on those who are blood deficient and those without blood stasis symptoms. 凡 陰虛有熱﹐血虛無瘀者忌服。 |
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