自然铜
Naming
Zi Ran Tong (Pyritum)——Lei Gong Pao Zhi Lun (Lei’s Treaties on Preparation of Drugs)
Origin
The iron pyrite of sulfide mainly containing FeS2.
Location
Sichuan, Hunan and Yunnan provinces in China.
Harvest
Collected all the time.
The actual smell and taste
No smell and taste.
Best quality
Regular, yellow with brightness, metalic luster of cross section.
Processing
Smashed, calcined by fire and quenched in vinegar, made powder or refined with water.
Property
Pungent, neutral; liver and kidney meridians entered.
Actions
Dissolve stasis and alleviate pain, reunion bones and cure trauma.
Indications
Traumatic injuries, bone fracture and soft tissue injuries, congestion, swelling and pain.
This herb has the actions of dissolving stasis, alleviating pain and promoting healing of bone fracture as a specific herb of traumatology. It is used both internally and externally. It is usually combined with blood-activating and trauma-curing analgesics such Xue Jie, Ru Xiang and Mo Yao, etc.
Dosage and Administrations
Decoct 10~15 g, 0.3 g in powder. Proper dose for external application.