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雄黄（英語：Realgar），又称鸡冠石，是一种含砷硫化物矿物，化学式为α-As4S4。它是一种柔软的可切矿物，以单斜晶系晶体或粒状、紧密块状和粉末狀出现，常与雌黄（As2S3）共生；它呈橙红色，在...