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.
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Afifi AM, Kelly WC, Essene EJ (1988) Phase relations among tellurides, sulfides, and oxides: I. Thermochemical data and calculated equilibria; II. Applications to telluride-bearing ore deposits. Econ Geol 83: 377–394 and 395–404
AS Badalov EM Spiridonov (1983) ArticleTitleFahlores and native gold of the Kairagach mineralization (Eastern Uzbekistan) (in Russian) Uzb Geol Zh 2 74–78
AS Badalov EM Spiridonov VP Heinke VV Pavshukov (1984) ArticleTitleMinerals-native elements and tellurides of the Kairagach volcanic-hosted mineralization (Uzbek Soviet Socialist Republic) (in Russian) Zap Uzb Otd Vses Min O-va 37 64–67
PB Barton SuffixJr BJ Skinner (1979) Sulfide mineral stabilities HL Barnes (Eds) Geochemistry of hydrothermal ore deposits Wiley Interscience New York 278–403
K Bogdanov D Tsonev K Kuzmanov (1997) ArticleTitleMineralogy of gold in the Elshitsa massive sulphide deposit, Sredna Gora zone, Bulgaria Mineral Deposita 32 219–229 Occurrence Handle10.1007/s001260050087
Bonham HF Jr (1986) Models for volcanic-hosted epithermal precious metal deposits: a review. Int Volcanol Congress Symp 5. Proceedings, Hamilton, New Zealand, pp 13–17
LJ Cabri (1965) ArticleTitlePhase relations in the Au–Ag–Te system and their mineralogical significance Econ Geol 60 1569–1606
TN Dalimov IN Ganiev (1994) ArticleTitleZoning of magmatism in the Chatcal-Kurama region (Devonian, Middle Carbon) (in Russian) Uzb Geol Zh 3 28–34
Genkin AD, Kovalenker VA, Safonov YG (1980) Characteristics of the ore textures and formation mechanism of pipe-like ore bodies of the Kochbulak deposit, Methods of investigation of ore-forming sulfides and their parageneses (in Russian). Moscow: Nauka 127–139
P Heald NK Foley DO Hayba (1987) ArticleTitleComparative anatomy of volcanic-hosted epithermal deposits: acid–sulfate and adularia-sericite types Econ Geol 82 1–26
RW Henley (1991) Epithermal gold deposits in volcanic terranes RP Foster (Eds) Gold metallogeny and exploration Blackie Glasgow 133–164
F Islamov A Kremenetsky E Minzer R Koneev (1999) The Kochbulak–Kairagach ore field TSh Shayakubov F Islamov A Kremenetsky R Seltmann (Eds) Au, Ag, and Cu deposits of Uzbekistan Excursion Guidebook Potsdam GFZ 91–106
Koneev RI, Gertman YL (1997) Microparageneses of gold in gold-ore formations of Eastern Uzbekistan. Osnovnye problemy v uchenii o magmatogennykh rudnykh mestorozhdeniyakh (Principle problems in the science on magmatic ore deposits). Moscow: Inst Geol Rudn Mest Ross Akad Nauk: 142–143 (in Russian)
Kovalenker VA, Chernyshev IV, Plotinskaya OY, Prokof’ev VY (2004) Ore mineralogy, fluid inclusions, age and isotopic characteristic of the late-Paleozoic high-sulfidation epithermal gold-telluride deposits: Kurama Mountains, Middle Tien Shan. In: Cook J, Ciobanu CL (eds) Au–Ag-telluride Deposits of the Golden Quadrilateral, South Apuseni Mts., Romania, Guidebook of the International Field Workshop of IGCP project 486, IAGOD Guidebook Series: 12: 239–241
VA Kovalenker VP Heinke (1984) ArticleTitleA new Cu–Sn–Bi–Se type of mineralization in the Kurama subzone of the Central Tien Shan (in Russian) Izv Akad Nauk SSSR, Ser Geol 5 91–104
VA Kovalenker VB Naumov VYu Prokof’ev (1980) ArticleTitleMineralogical and geochemical regularities and P–T parameters of the origin of productive mineral assemblages of the Kochbulak ore field (in Russian) Geol Ore Dep 1 38–52
VA Kovalenker OY Plotinskaya VY Prokof’ev YL Gertman RI Koneev VV Pomortsev (2003) ArticleTitleMineralogy, geochemistry, and genesis of gold–sulfide–selenide–telluride ores from the Kairagach deposit (Uzbekistan) Geol Ore Dep 45 171–200
VA Kovalenker YG Safonov VB Naumov VL Rusinov (1997) ArticleTitleThe Kochbulak epithermal gold–telluride deposit (Uzbekistan) Geol Ore Dep 39 127–152
Kovalenker VA, Troneva NV, Dobronichenko VV (1980) Characteristics of main ore minerals from pipe-like ore bodies of the Kochbulak deposit (in Russian). In: Distler VV (ed) Methods of investigation of ore-forming sulfides and their parageneses Moscow: Nauka: 140–164
VA Kovalenker NV Troneva OV Kuz’mina LN Vyal’sov PM Goloshchukov (1979) ArticleTitleThe first finding of kostovite in the Soviet Union (in Russian) Dokl Akad Nauk SSSR 247 564–569
B Legendre C Souleau H Chhay (1980) ArticleTitleThe ternary system Au–Ag–Te Bull Soc Chim France 5–6 197–204
NL Markham (1960) ArticleTitleSynthetic and natural phases in the system Au–Ag–Te Econ Geol 55 1148–1178
DW Pals PG Spry (2003) ArticleTitleTelluride mineralogy of the low sulfidation epithermal Emperor gold deposit, Vatukoula, Fiji Mineral Petrol 79 285–307 Occurrence Handle10.1007/s00710-003-0013-5
G Pellini (1915) ArticleTitleTelluriri di argento e oro Gaz Chim Ital 45 469–484
Plotinskaya OY, Kovalenker VA (1998) The Kairagach epithermal gold–telluride deposit: mineralogical–geochemical zonation. Tez Dokl Nauch Konf “Zolotorudnye mestorozhdeniya Uzbekistana:geologiya i promyshlennye tipy” (Proc. Conf “Gold-ore deposits of Uzbekistan: geology and commercial types”). Tashkent, IMR, pp 57–60 (in Russian)
Plotinskaya OY, Kovalenker VA, Prokof’ev VY, Groznova EO, Nosik LP (2001) Formation conditions of ores in the Kairagach epithermal gold–telluride deposit (Uzbekistan): fluid inclusions and stable isotopes. In: Melnikov FP, Poliansky EV (eds) Trudy X Mezhdunarodnoi konferentsii po termobarogeokhimii (Proc. X Int Conf on Thermobarochemistry) Aleksandrov: VNIISIMS, pp 158–179 (in Russian)
EW Porter E Ripley (1985) ArticleTitlePetrologic and stable isotope study of the gold-bearing breccia pipe at the Golden Sunlight deposit, Montana Econ Geol 80 1689–1706
G Simon EJ Essene (1996) ArticleTitlePhase relations among selenides, sulfides, tellurides, and oxides: I. Thermodynamic properties and calculated equilibria Econ Geol 91 1183–1208
EM Spiridonov AS Badalov (1983) ArticleTitleNew bismuth sulfoselenotellurides and sulfoselenides from the Kairagach volcanic deposit (Eastern Uzbekistan) (in Russian) Uzb Geol Zh 6 82–84
NC White JW Hedenquist (1990) ArticleTitleEpithermal environments and styles of mineralization: variations and their causes, and guidelines for exploration J Geochem Explor 36 445–474 Occurrence Handle10.1016/0375-6742(90)90063-G
X Zhang PG Spry (1994) ArticleTitleCalculated stability of aqueous tellurium species, calaverite and hessite at elevated temperature Econ Geol 89 1152–1166 Occurrence Handle10.2113/gsecongeo.89.5.1152
LP Zonenshain MI Kuzmin LM Natapov (1990) ArticleTitleGeology of the USSR: A plate tectonic synthesis AGU Geodynam Ser Monogr 21 240
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Plotinskaya, O., Kovalenker, V., Seltmann, R. et al. Te and Se mineralogy of the high-sulfidation Kochbulak and Kairagach epithermal gold telluride deposits (Kurama Ridge, Middle Tien Shan, Uzbekistan). Mineralogy and Petrology 87, 187–207 (2006). https://doi.org/10.1007/s00710-006-0130-z
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DOI: https://doi.org/10.1007/s00710-006-0130-z
