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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">litosphere</journal-id><journal-title-group><journal-title xml:lang="ru">Литосфера</journal-title><trans-title-group xml:lang="en"><trans-title>LITHOSPHERE (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1681-9004</issn><issn pub-type="epub">2500-302X</issn><publisher><publisher-name>A.N. Zavaritsky Institute of Geology and Geochemistry</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24930/1681-9004-2023-23-5-766-784</article-id><article-id custom-type="elpub" pub-id-type="custom">litosphere-1951</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>Роговая обманка в ультрамафит-мафитах худолазовского комплекса Южного Урала: условия кристаллизации и петрологические следствия</article-title><trans-title-group xml:lang="en"><trans-title>Hornblende in ultramafic-mafic rocks of the Khudolaz Complex of the Southern Urals: Crystallization conditions and petrological implications</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рахимов</surname><given-names>И. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Rakhimov</surname><given-names>I. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>450077, г. Уфа, ул. К. Маркса, 16/2</p><p>620110, г. Екатеринбург, ул. Академика Вонсовского, 15</p></bio><bio xml:lang="en"><p>16/2 Karl Marx st., Ufa 450077</p><p>3 Academician Koptyug av., Novosibirsk 630090</p></bio><email xlink:type="simple">igel92@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вишневский</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vishnevskiy</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>630090, г. Новосибирск, пр-т Академика Коптюга, 3</p></bio><bio xml:lang="en"><p>3 Academician Koptyug av., Novosibirsk 630090</p></bio><email xlink:type="simple">vishnevsky@igm.nsc.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт геологии УФИЦ РАН; Институт геологии и геохимии им. академика А.Н. Заварицкого УрО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Geology, UFRC RAS; A.N. Zavaritsky Institute of Geology and Geochemistry, UB RAS</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт геологии и минералогии им. В.С. Соболева СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>V.S. Sobolev Institute of Geology and Mineralogy, SB RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>03</day><month>11</month><year>2023</year></pub-date><volume>23</volume><issue>5</issue><fpage>766</fpage><lpage>784</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Рахимов И.Р., Вишневский А.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Рахимов И.Р., Вишневский А.В.</copyright-holder><copyright-holder xml:lang="en">Rakhimov I.R., Vishnevskiy A.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.lithosphere.ru/jour/article/view/1951">https://www.lithosphere.ru/jour/article/view/1951</self-uri><abstract><p>Объект исследований. Изучены морфология и химический состав амфиболов из ультрамафит-мафитов худолазовского комплекса Южного Урала. Методы. Морфологические исследования проведены с помощью оптической (Carl Zeiss Axioskop 40A) и электронной (Tescan Vega Compact) микроскопии. Химический состав минералов определен на рентгеновских микроанализаторах CAMECA SX 100 и JEOL JXA-8230. Результаты. Установлено, что в породах преобладает ксеноморфная бурая титанистая роговая обманка, образовавшаяся в основном за счет реакции клинопироксена с остаточным водонасыщенным расплавом при 920–1040°C. В небольшом количестве присутствует идиморфная бурая роговая обманка, кристаллизовавшаяся непосредственно из остаточного водонасыщенного расплава в том же температурном диапазоне. Менее распространена зеленая роговая обманка, главным образом возникшая по краям и трещинам в бурой роговой обманке на поздне- и постмагматическом этапе (670–830°C) при субсолидусных превращениях. На гидротермальной стадии бурая и зеленая роговые обманки частично заместились актинолитом и куммингтонитом при 620–650°C и ниже. Выводы. Характер изменения состава бурой роговой обманки свидетельствует о сходных условиях петрогенеза на позднемагматической стадии во всех интрузиях худолазовского комплекса. Процесс перехода бурой роговой обманки в зеленую происходил при постепенном повышении фугитивности кислорода (ΔNNO от –0.2…+0.4 до +0.9…+2.5) и сопровождался уменьшением количества Ti, Fe2+, Na и увеличением – Si, AlVI, Mg и K в структуре минерала. Низкие концентрации F и Cl в роговых обманках свидетельствуют об их формировании уже после удаления галогенов из расплава.</p></abstract><trans-abstract xml:lang="en"><p>Subject research. Morphology and chemical composition of amphiboles from ultramafic-mafic rocks of the Khudolaz complex. Methods. Morphological studies were carried out using optical (Carl Zeiss Axioskop 40A) and electron (Tescan Vega Compact) microscopes. The chemical composition of minerals was determined using CAMECA SX 100 and JEOL JXA-8230 electron probe microanalyzers. Results. The rocks under study are dominated by xenomorphic brown titanium hornblende crystals, formed mainly due to the reaction of clinopyroxene with a residual water-saturated melt at 920–1040°C. Euhedral brown hornblende, which crystallized directly from the residual water-saturated melt in the same temperature range, was found in small amounts. Green hornblende originated along the edges and cracks in brown hornblende crystals during the late magmatic stage and early hydrothermal stage (670–830°C) at the subsolidus transformation. At the hydrothermal stage (620–650°C and below), brown and green hornblende were partially replaced by actinolite and cummingtonite. Conclusions. The nature of changes in the composition of brown hornblende indicates similar petrogenesis conditions at the late magmatic stage in all intrusions of the Khudolaz complex. The process of transition from brown hornblende to green hornblende occurred with a gradual increase in oxygen fugacity (ΔNNO from –0.2…+0.4 to +0.9…+2.5), and was accompanied by decrease of Ti, Fe2+, Na and the increase of Si, AlVI, Mg, and K in the mineral structure. The low concentrations of F and Cl in hornblende crystals indicate their formation after migration of halogens from the melt.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>худолазовский комплекс</kwd><kwd>ультрамафит-мафиты</kwd><kwd>роговая обманка</kwd><kwd>актинолит</kwd><kwd>расплав</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Khudolaz complex</kwd><kwd>ultramafic-mafic rocks</kwd><kwd>hornblende</kwd><kwd>actinolite</kwd><kwd>melt</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследования поддержаны грантом РНФ, проект № 22-77-10049. Часть аналитических работ финансировалась за счет госбюджетной темы ИГ УФИЦ РАН (№ FMRS-2022-0012) и ИГГ УрО РАН (№ 123011800009-9). Авторы выражают благодарность анонимным рецензентам за полезные критические замечания, позволившие существенно улучшить первоначальную версию рукописи.</funding-statement><funding-statement xml:lang="en">The work supported by RSF, grant No. 22-77-10049. Part of analytical studies was carried out within the State Assignment of IG UFRC RAS (No. FMRS-2022-0012) and IGG UrB RAS (No. 123011800009-9). The authors thanks anonymous reviewers for helpful critical comments, which allowed us to significantly improve the original version of the manuscript.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Аль-Джубури А.И., Мак Канн Т., Газаль М.М. (2009) Реконструкция источников сноса для песчаников миоцена Северного Ирака (на основании петрографического анализа, анализа вещественного состава и химии минералов обломочной составляющей). 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