The inclusion of grothite in the zircon from granitoids of the crystalline basement of the Southern Yamal Peninsula
Grothite – rare F-Al-rich type of titanite – has been found in accessory zircon from the granitoids of the preJurassic basement of the Verkhnerechensky oil-gas area (in the southern part of the Yamal Peninsula) as a result of the study. Titanite forms rare inclusions (so-called minerals-prisoners) i...
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ftoceandocs:oai:aquadocs.org:1834/41497 2023-05-15T15:17:49+02:00 The inclusion of grothite in the zircon from granitoids of the crystalline basement of the Southern Yamal Peninsula Включения гротита в цирконе из гранитоидов кристаллического фундамента Южного Ямала Erokhin, Yu. V. Ivanov, K. S. Khiller, V. V. Arctic South Yamal Арктика Южный Ямал 2019 pp.5-11 http://hdl.handle.net/1834/41497 ru rus http://vestnik.mstu.edu.ru/show-eng.shtml?art=1989 http://vestnik.mstu.edu.ru/show.shtml?art=1989 http://hdl.handle.net/1834/41497 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Titanite Granitoids Fluorine Prejurassic period Microprobe analysis Гротит Титанит Фтор Доюрский период Микрозондовый анализ ASFA_2015::Y::Zircon ASFA_2015::R::Rare earth elements ASFA_2015::C::Chemical composition Journal Contribution 2019 ftoceandocs 2023-04-06T17:06:58Z Grothite – rare F-Al-rich type of titanite – has been found in accessory zircon from the granitoids of the preJurassic basement of the Verkhnerechensky oil-gas area (in the southern part of the Yamal Peninsula) as a result of the study. Titanite forms rare inclusions (so-called minerals-prisoners) in the central parts of zircon crystals; in our sample of 35 individuals only two grains of titanite have been discovered. The measurement of the chemical composition of the mineral has been carried out on an electron-probe microanalyzer CAMECA SX 100, equipped with five wave spectrometers (IGG UrB RAS, Ekaterinburg). According to the microprobe analysis, the mineral has an unusual chemical composition, it shows the presence of significant concentrations of alumina (Al2O3 to 8.5 wt.%), rare earths elements (REE to 4.3 wt.%), and fluorine (F to 2 wt.%). This grothite is dramatically different in chemical composition from the accessory titanite of the matrix granitoid (monzoleicogranite), which is characterized by values close to the reference sphene. Overall, grothite is an intermediate connection between the two extreme members CaTiSiO4O (titanite) – CaAlSiO4F (synthesized Al-F-titanite), and the Verkhnerechensky mineral content of a hypothetical Al-F-titanite achieves a high level of 24–26 %. Unfortunately, grothite is crystallized in a wide range of temperatures and pressures which does not allow its use in thermodynamic reconstructions. The existence of grothite (or Al-F-titanite) is apparently determined not so much on the PT-conditions of rocks' formation, but most likely on the chemistry of the environment. So it is obvious that the Verkhnerechensky titanite was formed in the melt with an increased concentration of fluorine. It is the first record of grothite in the form of inclusions in accessory zircon. В результате проведенного исследования в акцессорных цирконах из гранитоидов доюрского фундамента Верхнереченской нефтегазоразведочной площади (южная часть полуострова Ямал) установлен гротит – редкая ... Other Non-Article Part of Journal/Newspaper Arctic Yamal Peninsula Арктика Ямал IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications Arctic Yamal Peninsula ENVELOPE(69.873,69.873,70.816,70.816) |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
Russian |
topic |
Titanite Granitoids Fluorine Prejurassic period Microprobe analysis Гротит Титанит Фтор Доюрский период Микрозондовый анализ ASFA_2015::Y::Zircon ASFA_2015::R::Rare earth elements ASFA_2015::C::Chemical composition |
spellingShingle |
Titanite Granitoids Fluorine Prejurassic period Microprobe analysis Гротит Титанит Фтор Доюрский период Микрозондовый анализ ASFA_2015::Y::Zircon ASFA_2015::R::Rare earth elements ASFA_2015::C::Chemical composition Erokhin, Yu. V. Ivanov, K. S. Khiller, V. V. The inclusion of grothite in the zircon from granitoids of the crystalline basement of the Southern Yamal Peninsula |
topic_facet |
Titanite Granitoids Fluorine Prejurassic period Microprobe analysis Гротит Титанит Фтор Доюрский период Микрозондовый анализ ASFA_2015::Y::Zircon ASFA_2015::R::Rare earth elements ASFA_2015::C::Chemical composition |
description |
Grothite – rare F-Al-rich type of titanite – has been found in accessory zircon from the granitoids of the preJurassic basement of the Verkhnerechensky oil-gas area (in the southern part of the Yamal Peninsula) as a result of the study. Titanite forms rare inclusions (so-called minerals-prisoners) in the central parts of zircon crystals; in our sample of 35 individuals only two grains of titanite have been discovered. The measurement of the chemical composition of the mineral has been carried out on an electron-probe microanalyzer CAMECA SX 100, equipped with five wave spectrometers (IGG UrB RAS, Ekaterinburg). According to the microprobe analysis, the mineral has an unusual chemical composition, it shows the presence of significant concentrations of alumina (Al2O3 to 8.5 wt.%), rare earths elements (REE to 4.3 wt.%), and fluorine (F to 2 wt.%). This grothite is dramatically different in chemical composition from the accessory titanite of the matrix granitoid (monzoleicogranite), which is characterized by values close to the reference sphene. Overall, grothite is an intermediate connection between the two extreme members CaTiSiO4O (titanite) – CaAlSiO4F (synthesized Al-F-titanite), and the Verkhnerechensky mineral content of a hypothetical Al-F-titanite achieves a high level of 24–26 %. Unfortunately, grothite is crystallized in a wide range of temperatures and pressures which does not allow its use in thermodynamic reconstructions. The existence of grothite (or Al-F-titanite) is apparently determined not so much on the PT-conditions of rocks' formation, but most likely on the chemistry of the environment. So it is obvious that the Verkhnerechensky titanite was formed in the melt with an increased concentration of fluorine. It is the first record of grothite in the form of inclusions in accessory zircon. В результате проведенного исследования в акцессорных цирконах из гранитоидов доюрского фундамента Верхнереченской нефтегазоразведочной площади (южная часть полуострова Ямал) установлен гротит – редкая ... |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Erokhin, Yu. V. Ivanov, K. S. Khiller, V. V. |
author_facet |
Erokhin, Yu. V. Ivanov, K. S. Khiller, V. V. |
author_sort |
Erokhin, Yu. V. |
title |
The inclusion of grothite in the zircon from granitoids of the crystalline basement of the Southern Yamal Peninsula |
title_short |
The inclusion of grothite in the zircon from granitoids of the crystalline basement of the Southern Yamal Peninsula |
title_full |
The inclusion of grothite in the zircon from granitoids of the crystalline basement of the Southern Yamal Peninsula |
title_fullStr |
The inclusion of grothite in the zircon from granitoids of the crystalline basement of the Southern Yamal Peninsula |
title_full_unstemmed |
The inclusion of grothite in the zircon from granitoids of the crystalline basement of the Southern Yamal Peninsula |
title_sort |
inclusion of grothite in the zircon from granitoids of the crystalline basement of the southern yamal peninsula |
publishDate |
2019 |
url |
http://hdl.handle.net/1834/41497 |
op_coverage |
Arctic South Yamal Арктика Южный Ямал |
long_lat |
ENVELOPE(69.873,69.873,70.816,70.816) |
geographic |
Arctic Yamal Peninsula |
geographic_facet |
Arctic Yamal Peninsula |
genre |
Arctic Yamal Peninsula Арктика Ямал |
genre_facet |
Arctic Yamal Peninsula Арктика Ямал |
op_relation |
http://vestnik.mstu.edu.ru/show-eng.shtml?art=1989 http://vestnik.mstu.edu.ru/show.shtml?art=1989 http://hdl.handle.net/1834/41497 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
_version_ |
1766348083734511616 |