Chalcopyrite on Siderit | Barras-Gautier-Min.https://static.wixstatic.com/media/daf8af_8b3a2c24e22d4873904fa357dce6c49b~mv2.jpg/v1/fit/w_500,h_500,q_90/file.jpg Dimension: 12 X 11cm 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: EC34