SPECIFIC FEATURES OF ORE FORMATION OF BARUN-SHIVEINSKOE TUNGSTEN DEPOSIT (EASTERN TRANSBAIKALIA)
The relevance of the study is in the need to expand the mineral resource base of Russia. Eastern Transbaikalia is one of the oldest mining regions of the country. Barun- Shiveinskoe field is mercury-antimony-tungsten ore formations. For the region, there is an urgent need to search for and discover...
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| Format: | Article |
| Language: | Russian |
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Tomsk Polytechnic University
2021-09-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | http://izvestiya.tpu.ru/archive/article/view/3357/2548 |
| _version_ | 1818516574455201792 |
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| author | Bair N. Abramov |
| author_facet | Bair N. Abramov |
| author_sort | Bair N. Abramov |
| collection | DOAJ |
| description | The relevance of the study is in the need to expand the mineral resource base of Russia. Eastern Transbaikalia is one of the oldest mining regions of the country. Barun- Shiveinskoe field is mercury-antimony-tungsten ore formations. For the region, there is an urgent need to search for and discover new ore deposits. For successful completion of such a task, the data are needed from a detailed study of already known ore deposits, which can be used to develop scientifically reasonable criteria for searching for ore deposits and forecasting mineralisation. Such data includes determination of sources of ore-bearing melts and conditions of formation of mercury-antimony-tungsten ore formation deposits. The aim of the study is to prove participation in ore formation of several ore-bearing sources with different characteristics based on the data of isotopic composition of oxygen of ore-bearing quartz and sulphur sulfides, as well as comparative analysis of elemental composition of quartz-wolframite ores of Barun-Shiveinskoe deposit with quartz-wolframite ores of tungsten deposits in Eastern Transbaikalia. Object of the study is Barun-Shiveinskoe tungsten deposit located in Eastern Transbaikalia. Methods. To determine the elemental composition of rocks, the X-ray fluorescence method and standard chemical analysis were used at the Geological Institute of the Siberian Branch of the Russian Academy of Sciences (GIN SB RAS, Ulan-Ude). Oxygen isotopic composition was determined at the analytical centre (GIN SO RAS, Ulan-Ude) using a MIR 10-30 laser heating system with a 100 Watt CO2 laser and a 10,6 μm wavelength in the infrared region, in the presence of the BrF5 reagent using the Z.D. Sharp method (1990). Mineral composition study was carried out in GIN SO RAS on the LEO-1430VP scanning electron microscope with the INCA Energy 350 energy dispersion spectrometer (Oxford Instruments) at an accelerating voltage of 20 kV, probe current is less than 0,5 nA, probe size is 0,1 µm. In the analysis mode, the spectral set time was 50 s. Isotope composition of sulphur sulfides study was carried out at the collective use centre for multi-element and isotope studies of the Siberian Branch of the Russian Academy of Sciences (Novosibirsk). Results. The isotopic composition of oxygen in the fluid was determined in equilibrium with quartz of the productive stage at 210–150 °C, varying from 4,25 to 14,22 ‰, which corresponds to aqueous fluid of magmatic nature. The isotopic composition of sulfur cinnabar, the final ore stage of the deposit formation, corresponding to mantle values, has been established. A narrow interval of δ34S, ‰ CDT values for cinnabar sulphur from –3,5 to to –4,5 indicates a single source. For the first time, a rare cinnabaric minerals (metacinobarite, corderoite) formed in the oxidation zones of mercury deposits under low-temperature conditions were identified at the deposit. Their elemental composition was determined. In quartz-wolframite ores from tungsten deposits in Eastern Transbaikalia, including Barun-Shiveinskoe, a close correlation relation (r – 0,53–0,96) with a number of elements (As, Ta, Nb, Hf) was identified, indicating common sources of their formation. Ore formation at Barun-Shiveinskoe deposit was carried out from different levels of ore-bearing sources. Wolframites were formed from a crust source and mercury from a mantle one. |
| first_indexed | 2024-12-11T00:44:08Z |
| format | Article |
| id | doaj.art-7469cf36c251404f9caed5a2f30f204b |
| institution | Directory Open Access Journal |
| issn | 2500-1019 2413-1830 |
| language | Russian |
| last_indexed | 2024-12-11T00:44:08Z |
| publishDate | 2021-09-01 |
| publisher | Tomsk Polytechnic University |
| record_format | Article |
| series | Известия Томского политехнического университета: Инжиниринг георесурсов |
| spelling | doaj.art-7469cf36c251404f9caed5a2f30f204b2022-12-22T01:26:49ZrusTomsk Polytechnic UniversityИзвестия Томского политехнического университета: Инжиниринг георесурсов2500-10192413-18302021-09-01332910010810.18799/24131830/2021/9/3357SPECIFIC FEATURES OF ORE FORMATION OF BARUN-SHIVEINSKOE TUNGSTEN DEPOSIT (EASTERN TRANSBAIKALIA)Bair N. Abramov0Institute of Natural Resources, Ecology and Cryology, SB RASThe relevance of the study is in the need to expand the mineral resource base of Russia. Eastern Transbaikalia is one of the oldest mining regions of the country. Barun- Shiveinskoe field is mercury-antimony-tungsten ore formations. For the region, there is an urgent need to search for and discover new ore deposits. For successful completion of such a task, the data are needed from a detailed study of already known ore deposits, which can be used to develop scientifically reasonable criteria for searching for ore deposits and forecasting mineralisation. Such data includes determination of sources of ore-bearing melts and conditions of formation of mercury-antimony-tungsten ore formation deposits. The aim of the study is to prove participation in ore formation of several ore-bearing sources with different characteristics based on the data of isotopic composition of oxygen of ore-bearing quartz and sulphur sulfides, as well as comparative analysis of elemental composition of quartz-wolframite ores of Barun-Shiveinskoe deposit with quartz-wolframite ores of tungsten deposits in Eastern Transbaikalia. Object of the study is Barun-Shiveinskoe tungsten deposit located in Eastern Transbaikalia. Methods. To determine the elemental composition of rocks, the X-ray fluorescence method and standard chemical analysis were used at the Geological Institute of the Siberian Branch of the Russian Academy of Sciences (GIN SB RAS, Ulan-Ude). Oxygen isotopic composition was determined at the analytical centre (GIN SO RAS, Ulan-Ude) using a MIR 10-30 laser heating system with a 100 Watt CO2 laser and a 10,6 μm wavelength in the infrared region, in the presence of the BrF5 reagent using the Z.D. Sharp method (1990). Mineral composition study was carried out in GIN SO RAS on the LEO-1430VP scanning electron microscope with the INCA Energy 350 energy dispersion spectrometer (Oxford Instruments) at an accelerating voltage of 20 kV, probe current is less than 0,5 nA, probe size is 0,1 µm. In the analysis mode, the spectral set time was 50 s. Isotope composition of sulphur sulfides study was carried out at the collective use centre for multi-element and isotope studies of the Siberian Branch of the Russian Academy of Sciences (Novosibirsk). Results. The isotopic composition of oxygen in the fluid was determined in equilibrium with quartz of the productive stage at 210–150 °C, varying from 4,25 to 14,22 ‰, which corresponds to aqueous fluid of magmatic nature. The isotopic composition of sulfur cinnabar, the final ore stage of the deposit formation, corresponding to mantle values, has been established. A narrow interval of δ34S, ‰ CDT values for cinnabar sulphur from –3,5 to to –4,5 indicates a single source. For the first time, a rare cinnabaric minerals (metacinobarite, corderoite) formed in the oxidation zones of mercury deposits under low-temperature conditions were identified at the deposit. Their elemental composition was determined. In quartz-wolframite ores from tungsten deposits in Eastern Transbaikalia, including Barun-Shiveinskoe, a close correlation relation (r – 0,53–0,96) with a number of elements (As, Ta, Nb, Hf) was identified, indicating common sources of their formation. Ore formation at Barun-Shiveinskoe deposit was carried out from different levels of ore-bearing sources. Wolframites were formed from a crust source and mercury from a mantle one.http://izvestiya.tpu.ru/archive/article/view/3357/2548barun-shiveinskoe depositwolframitecinnabarisotopes of oxygen and sulfurmantle sourceeastern transbaikalia |
| spellingShingle | Bair N. Abramov SPECIFIC FEATURES OF ORE FORMATION OF BARUN-SHIVEINSKOE TUNGSTEN DEPOSIT (EASTERN TRANSBAIKALIA) Известия Томского политехнического университета: Инжиниринг георесурсов barun-shiveinskoe deposit wolframite cinnabar isotopes of oxygen and sulfur mantle source eastern transbaikalia |
| title | SPECIFIC FEATURES OF ORE FORMATION OF BARUN-SHIVEINSKOE TUNGSTEN DEPOSIT (EASTERN TRANSBAIKALIA) |
| title_full | SPECIFIC FEATURES OF ORE FORMATION OF BARUN-SHIVEINSKOE TUNGSTEN DEPOSIT (EASTERN TRANSBAIKALIA) |
| title_fullStr | SPECIFIC FEATURES OF ORE FORMATION OF BARUN-SHIVEINSKOE TUNGSTEN DEPOSIT (EASTERN TRANSBAIKALIA) |
| title_full_unstemmed | SPECIFIC FEATURES OF ORE FORMATION OF BARUN-SHIVEINSKOE TUNGSTEN DEPOSIT (EASTERN TRANSBAIKALIA) |
| title_short | SPECIFIC FEATURES OF ORE FORMATION OF BARUN-SHIVEINSKOE TUNGSTEN DEPOSIT (EASTERN TRANSBAIKALIA) |
| title_sort | specific features of ore formation of barun shiveinskoe tungsten deposit eastern transbaikalia |
| topic | barun-shiveinskoe deposit wolframite cinnabar isotopes of oxygen and sulfur mantle source eastern transbaikalia |
| url | http://izvestiya.tpu.ru/archive/article/view/3357/2548 |
| work_keys_str_mv | AT bairnabramov specificfeaturesoforeformationofbarunshiveinskoetungstendepositeasterntransbaikalia |