Dan Fan
          胆矾
          
          
      NamingDan Fan (Chalcanthite)——Shen Nong Ben Cao Jing (Shen Nong’s Herbal)The Processing of 胆矾OriginThe blue vitriol or manmade hydrous blue vitriol (CuSO4 •5H2O) of the family Vitriol.LocationMost area in China.HarvestMined all the year round.The actual smell and tasteAstringent taste.Best qualityBi
          Chalcanthite
          
          
      NamingDan Fan (Chalcanthite)——Shen Nong Ben Cao Jing (Shen Nong’s Herbal)The Processing of ChalcanthiteOriginThe blue vitriol or manmade hydrous blue vitriol (CuSO4 •5H2O) of the family Vitriol.LocationMost area in China.HarvestMined all the year round.The actual smell and tasteAstringent taste.Best

