Chalcopyrite on Siderit | Barras-Gautier-Min.https://static.wixstatic.com/media/daf8af_6e3597fb18934b81b6bbee7e25d23554~mv2.jpg/v1/fit/w_500,h_500,q_90/file.jpg Dimension: 10 X 8.5cm Provenance: Qing lung, Guizhou Prov. China The paragenesis of these 2 minerals is excellent in quality, in particular the silky and gem-like appearance of siderite, a small deposit that has produced little! Ref: EC33