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中药石燕为古生代腕足类石燕子科动物中华弓石燕及近缘动物的化石。具有除湿热,利小便,退目翳的功效。主要成分为碳酸钙、少量磷酸及二氧化硅。常用火煅醋淬法炮制。为
The traditional Chinese medicine Shiyan is a fossil of the Archaeopterygium sphenoidea and related animals in the Palaeozoic Brachiopodidae. Has the effect of dehumidification, urination, and rejuvenation. The main components are calcium carbonate, a small amount of phosphoric acid and silicon dioxide. Commonly used fire vinegar quenching process. for