First knowledges about presence of PGE in siderite-polysulphidic mineralization of the Strieborná vein in Rožòava

Abstract

Vein-type of epigenetic siderite-polysulphidic mineralization of the Strieborná vein was formed during multiphase tectonic-deformation and mineralizing events. Mineralized subvertical fault structures with high-grade polysulphidic ores – mainly tetrahedrite occur between megaboudine of siderite vein filling. There are two generations of tetrahedrite (I., II.) with gold and Au-Hg-Ag alloy. The samples of siderite-polysuphidic ores from 8th level of the Strieborná vein have been analyzed on Au – Ag content.The chance analysis of the flotation tetrahedrite concentrate form siderite-polysulphidic ores of the Strieborná vein have indicated content of PGE. New data about PGE (Pt - 0.0162 ppm, Ru - 0.0024 ppm, Rh – 0.0404 ppm a Pd - 0,0021 ppm) was performed also by the control analysis; low and very variable PGE content in siderite-polysulphidic ores from 8th level was found by the next research. The platinum and Rh are the most significant PGE for the extended flotation treatment, there is low Pt enrichment of the tetrahedrite concentrate (K), and higher values of Pt there are positively in flotation scrap, respectively.The questions – origin and source of PGE and process of PGE enrichment to flotation tetrahedrite concentarate are at level of the consideration in present, inclusive questions about possibilities of PGE content in mineral phases and host rocks (e.g. dark shales).

Keywords

• PGE
• quartz-siderite-polysulphide mineralization
• Strieborná vein
• Rožòava