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| Description
| - The study of barren, low- and high-Au mineralized samples from Amantaytau, a shear-zone hosted gold deposit, showed that the local host rock acted as an important source of Au, As, Ni and S in the formation of the deposit. This lithogeochemical signature is also evident from the chemistry of syn-depositional pyrite in these shales, which contains average Au, As and Ni concentrations of 0.34, 1658 and 1971 ppm, respectively. Distributions of REE indicate a homogeneous source of LREE, while HREE reflect most likely primary variation in the sediments. The mineralized zone is marked by a positive Eu anomaly, which supports reducing conditions during the mineralization. The hydrothermal overprint by an aqueous and a carbonic fluid component was documented in a high-Au mineralized sample (13C = -13.0 promile). The 34S values in pyrite (–0.13 to +7.30 promile) from barren and mineralized samples are consistent with marine sulfate being a principal source of the ore sulfur. Quartz from high-Au sample contains primary inclusions of L+V type (LVR=0.9) which represent H2O-rich inclusions with Th = 178-192°C and salinity from 1.4 to 2.2 wt.% NaCl eq. Oxygen isotope study of quartz from barren, low- to high-Au mineralized samples gave homogeneous values in the range from 16.50 to 18.60 promile. 18Ofluid calculated at Th 220°C = 6.0-8.1 promile is consistent with hydrothermal origin of fluids while at Th 400°C = 12.0-14.1 promile, suggesting metamorphic origin of fluids.
- The study of barren, low- and high-Au mineralized samples from Amantaytau, a shear-zone hosted gold deposit, showed that the local host rock acted as an important source of Au, As, Ni and S in the formation of the deposit. This lithogeochemical signature is also evident from the chemistry of syn-depositional pyrite in these shales, which contains average Au, As and Ni concentrations of 0.34, 1658 and 1971 ppm, respectively. Distributions of REE indicate a homogeneous source of LREE, while HREE reflect most likely primary variation in the sediments. The mineralized zone is marked by a positive Eu anomaly, which supports reducing conditions during the mineralization. The hydrothermal overprint by an aqueous and a carbonic fluid component was documented in a high-Au mineralized sample (13C = -13.0 promile). The 34S values in pyrite (–0.13 to +7.30 promile) from barren and mineralized samples are consistent with marine sulfate being a principal source of the ore sulfur. Quartz from high-Au sample contains primary inclusions of L+V type (LVR=0.9) which represent H2O-rich inclusions with Th = 178-192°C and salinity from 1.4 to 2.2 wt.% NaCl eq. Oxygen isotope study of quartz from barren, low- to high-Au mineralized samples gave homogeneous values in the range from 16.50 to 18.60 promile. 18Ofluid calculated at Th 220°C = 6.0-8.1 promile is consistent with hydrothermal origin of fluids while at Th 400°C = 12.0-14.1 promile, suggesting metamorphic origin of fluids. (en)
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| Title
| - A two-stage evolution model for the Amantaytau orogenic-type gold deposit in Uzbekistan
- A two-stage evolution model for the Amantaytau orogenic-type gold deposit in Uzbekistan (en)
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| skos:prefLabel
| - A two-stage evolution model for the Amantaytau orogenic-type gold deposit in Uzbekistan
- A two-stage evolution model for the Amantaytau orogenic-type gold deposit in Uzbekistan (en)
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| skos:notation
| - RIV/00025798:_____/13:00000038!RIV14-MSM-00025798
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| http://linked.open...avai/predkladatel
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/00025798:_____/13:00000038
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Amantaytau orogenic gold deposit, importance of black shale, preconcentration of Au and As, stable isotope, fluid inclusion, LA ICP MS (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - DE - Spolková republika Německo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Pašava, Jan
- Vymazalová, Anna
- Dobeš, Petr
- Frimmel, Hartwig
- Jukov, Alexander
- Koneev, Rustam
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| http://linked.open...ain/vavai/riv/wos
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| issn
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| number of pages
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| http://bibframe.org/vocab/doi
| - 10.1007/s00126-013-0461-8
|
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