Mineral assemblages from the vein salband at Sacarimb, Golden Quadrilateral, Romania: I. Sulphides and sulphosalts

Sband As-sulphosalts are abundant within salband ores from the Sacarimb epithermal Au-Te vein system, South Apuseni Mts., Romania. Similar to the main ore, tetrahedrite-tennantite, bournoniteseligmannite and jordanite-geocronite are the three main groups, although the first group is prominent in the salband, whereas the second prevails in the vein filling. Various Agand/or Cubearing Bi sulphosalts are also identified and documented here for the first time. These include cosalite, aikinite, lillianite homologues and members of the galena-matildite series. Sulphosalts are the main carriers for a first population of tellurides. Reopening of the veins is interpreted from a range of brecciation textures typified by ‘emulsionlike’ halos surrounding the sulphide/sulphosalt grains. Deposition a second population of tellurides is associated with this event; Bi-sulphosalts relates to this episode only.