caa a22 4500 467890331 CHVBK 20180406152747.0 cr unu---uuuuu 170328e20060701xx s 000 0 eng 10.1007/s00710-006-0130-z doi (NATIONALLICENCE)springer-10.1007/s00710-006-0130-z Te and Se mineralogy of the high-sulfidation Kochbulak and Kairagach epithermal gold telluride deposits (Kurama Ridge, Middle Tien Shan, Uzbekistan) [Elektronische Daten] [O. Yu. Plotinskaya, V. A. Kovalenker, R. Seltmann, C. J. Stanley] Summary: The Late Paleozoic Kochbulak and Kairagach deposits are located on the northern slope of the Kurama Ridge, Middle Tien Shan, in the same volcanic structure and the same ore-forming system. Au-Ag-Cu-Bi-Te-Se mineralization is confined to veins and dissemination zones accompanied by quartz-sericite wall-rock alteration. The tellurides, calaverite, altaite, hessite, and tetradymite are widespread at both deposits; at Kairagach selenides and sulfoselenides of Bi and Pb are common, while at Kochbulak Bi and Pb telluroselenides and sulfotelluroselenides are typical. The paragenetic sequence of telluride assemblages are similar for both deposits and change from calaverite + altaite + native Au to sylvanite + Bi tellurides + native Te, Bi tellurides + native Au, and, finally, to Au + Ag tellurides with time. These mineralogical changes are accompanied by an increase in the Ag content of native gold that correlates with a decrease in temperature, fTe2 and fO2 and an increase in pH. Springer-Verlag, 2006 Plotinskaya O. Yu Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry (IGEM RAS), Moscow, Russia aut Kovalenker V. A. Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry (IGEM RAS), Moscow, Russia aut Seltmann R. CERCAMS, Department Mineralogy, Natural History Museum, London, Great Britain aut Stanley C. J. CERCAMS, Department Mineralogy, Natural History Museum, London, Great Britain aut Mineralogy and Petrology Springer-Verlag 87/3-4(2006-07-01), 187-207 0930-0708 87:3-4<187 2006 87 710 https://doi.org/10.1007/s00710-006-0130-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00710-006-0130-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Plotinskaya O. Yu Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry (IGEM RAS), Moscow, Russia aut NATIONALLICENCE 700 1- Kovalenker V. A. Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry (IGEM RAS), Moscow, Russia aut NATIONALLICENCE 700 1- Seltmann R. CERCAMS, Department Mineralogy, Natural History Museum, London, Great Britain aut NATIONALLICENCE 700 1- Stanley C. J. CERCAMS, Department Mineralogy, Natural History Museum, London, Great Britain aut NATIONALLICENCE 773 0- Mineralogy and Petrology Springer-Verlag 87/3-4(2006-07-01), 187-207 0930-0708 87:3-4<187 2006 87 710 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer