title: Conditions of formation and sources of fluids of the birthplace of barren residential quartz of hydrothermal-metamorphogenic-metasomatic and hydrothermal-metamorphogenic genesis (Middle and South Urals)
metadata.name: dc.contributor.author
metadata.value: Korekina, Maria A.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Savichev, Alexander N.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2023-09-05T10:09:26Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2023-09-05T10:09:26Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2023-06
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Korekina, M. A., Savichev, A. N. (2023). Conditions of formation and sources of fluids of the birthplace of barren residential quartz of hydrothermal-metamorphogenic-metasomatic and hydrothermal-metamorphogenic genesis (Middle and South Urals). Vestnik of Saint Petersburg University. Earth Sciences, 68 (2), 200–217. https://doi.org/10.21638/spbu07.2023.201 (In Russian)
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu07.2023.201
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/43950
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: The paper considers the conditions of quartz formation of hydrothermal-metamorphogenic-
  metasomatic and hydrothermal-metamorphogenic genesis of deposits and manifestations of
  the Middle and Southern Urals based on the study of fluid inclusions by methods of thermobarogeochemistry,
  ion and gas chromatography. It is established that the studied quartz objects
  are formed in a wide temperature range, against the background of insignificant differences in
  pressure values. It is shown that the temperatures of mineral formation in deposits of hydrothermal-
  metamorphogenic-metasomatic genesis vary from 440–230 °C at a pressure of 1.2–1.4 kbar.
  The formation of these veins occurred with the participation of K-Mg-Fe-chloride fluid with a salinity of 1.2–8.7 wt. % NaCl-eq., depleted Mg and Fe due to the deposition of magnesia-ferruginous
  carbonates. A typomorphic feature of hydrothermal-metamorphogenic-metasomatic
  quartz is the high values of boron associated with the placement of quartz veins among pegmatoids
  and the presence of boron-containing mineral inclusions on quartz-vein objects. Veins of
  hydrothermal-metamorphogenic genesis were formed when the crack system was filled with
  quartz with the participation of a substantially K-Na chloride fluid (0.2–15.5 wt. % NaCl-eq.),
  at homogenization temperatures of 435–335 °C and a pressure of 1.3–2.3 kbar. In the composition
  of fluid inclusions of hydrothermal-metamorphogenic-metasomatic quartz, the sum of
  “harmful” components (H2O, CO2, CH4, Cl, B, Na, K, Mg and Li) is less than in hydrothermal-
  metamorphogenic quartz. The studied quartz deposits and veins were formed in the range
  of temperatures and pressures not higher than the green shale stage during several successive
  stages: the formation of quartz veins — in a more high-temperature hydrothermal stage, while
  subsequent changes in quartz veins occurred under the influence of metamorphism processes,
  with a decrease in temperature. Subsequent changes are associated with the appearance of fracturing,
  cataclysm and recrystallization of quartz bodies with a decrease in grain size.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: The work was carried out within the framework of state order 122062100023-5, South Ural Federal
  Scientific Center for Mineralogy and Geoecology of the Ural Branch of the Russian Academy of Sciences.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Earth Sciences;Volume 68; Issue 2
metadata.lang: -
metadata.name: dc.subject
metadata.value: quartz
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: thermobarogeochemistry
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: fluid inclusions
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: metasomatism
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: metamorphism
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Conditions of formation and sources of fluids of the birthplace of barren residential quartz of hydrothermal-metamorphogenic-metasomatic and hydrothermal-metamorphogenic genesis (Middle and South Urals)
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 01.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/43950/1/01.pdf
resources.format: Adobe PDF
resources.size: 2,08 MB