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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">10.24930/1681-9004-2019-19-6-919-944</article-id><article-id custom-type="elpub" pub-id-type="custom">litosphere-1226</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>Поведение микроэлементов в кислотных вытяжках  (уксусной, азотной и соляной) из терригенно-карбонатных пород  укской свиты верхнего рифея Южного Урала</article-title><trans-title-group xml:lang="en"><trans-title>Trace element behaviour in acidic leachates (acetic, nitric and hydrochloric) from siliciclastic-carbonate rocks of the Upper Riphean Uk formation  in the Southern Urals</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>Дуб</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dub</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>620016, г. Екатеринбург, ул. Вонсовского, 15</p></bio><bio xml:lang="en"><p>15 Vonsovsky st.,  Еkaterinburg 620016</p></bio><email xlink:type="simple">sapurin@igg.uran.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>Чередниченко</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Cherednichenko</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>620016, г. Екатеринбург, ул. Вонсовского, 15</p></bio><bio xml:lang="en"><p>15 Vonsovsky st.,  Еkaterinburg 620016</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Киселева</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kiseleva</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>620016, г. Екатеринбург, ул. Вонсовского, 15</p></bio><bio xml:lang="en"><p>15 Vonsovsky st.,  Еkaterinburg 620016</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Горбунова</surname><given-names>Н. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Gorbunova</surname><given-names>N. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>620016, г. Екатеринбург, ул. Вонсовского, 15</p></bio><bio xml:lang="en"><p>15 Vonsovsky st.,  Еkaterinburg 620016</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гуляева</surname><given-names>Т. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Gulyaeva</surname><given-names>T. Ya.</given-names></name></name-alternatives><bio xml:lang="ru"><p>620016, г. Екатеринбург, ул. Вонсовского, 15</p></bio><bio xml:lang="en"><p>15 Vonsovsky st.,  Еkaterinburg 620016</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дерюгина</surname><given-names>Л. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Deryugina</surname><given-names>L. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>620016, г. Екатеринбург, ул. Вонсовского, 15</p></bio><bio xml:lang="en"><p>15 Vonsovsky st.,  Еkaterinburg 620016</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт геологии и геохимии УрО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A.N. Zavaritsky Institute of Geology and Geochemistry, Urals Branch of RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>03</day><month>01</month><year>2020</year></pub-date><volume>19</volume><issue>6</issue><fpage>919</fpage><lpage>944</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Дуб С.А., Чередниченко Н.В., Киселева Д.В., Горбунова Н.П., Гуляева Т.Я., Дерюгина Л.К., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Дуб С.А., Чередниченко Н.В., Киселева Д.В., Горбунова Н.П., Гуляева Т.Я., Дерюгина Л.К.</copyright-holder><copyright-holder xml:lang="en">Dub S.A., Cherednichenko N.V., Kiseleva D.V., Gorbunova N.P., Gulyaeva T.Y., Deryugina L.K.</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/1226">https://www.lithosphere.ru/jour/article/view/1226</self-uri><abstract><p>Объектами исследования являлись 14 образцов известняков и один образец карбонатно-терригенной породы из терригенно-карбонатных отложений укской свиты верхнего рифея Южного Урала.</p><p>Методика включала в себя установление минерального и химического состава образцов, основным инструментом служил ICP-MS метод определения концентраций малых элементов (микроэлементов). Рентгеноструктурный анализ проводился с использованием дифрактометра Shimadzu XRD-7000, содержания породообразующих оксидов в валовых пробах установлены рентгеноспектральным флуоресцентным методом на спектрометрах СРМ-35 и Shimadzu XRF 1800. Микроэлементный состав валовых проб и кислотных вытяжек, полученных при использовании уксусной (10%), азотной (36%) и соляной (17%) кислот, определен на спектрометре Perkin Elmer ELAN 9000.</p><sec><title>Результаты</title><p>Результаты. Проанализировано распределение литофильных, редкоземельных и ряда других элементов (Sr, Ni, U) – как в валовых пробах, так и в кислотных вытяжках. Выявлены основные фазы-носители этих элементов.</p></sec><sec><title>Выводы</title><p>Выводы. 1. Использование перечисленных кислот приводит к попаданию в раствор некарбонатной составляющей, в том числе к контаминации карбонатных вытяжек литофильными элементами. В частности, отмечается переход в вытяжки таких элементов, как Rb, Zr, Li, Th, Ti, Sc, Co (наиболее показательны в этом отношении азотная и соляная кислоты, менее интенсивно процесс протекал в уксусной кислоте). 2. Установлено, что основными носителями редкоземельных элементов (РЗЭ) в исследуемых породах являются глинистое вещество (1), акцессорные минералы (2), в том числе фосфатсодержащие зерна, тонкорассеянные (окси)гидроксиды железа и марганца (3) и вторичные карбонатные фазы (4), представленные доломитом. Предполагается, что характер кривых распределения РЗЭ (при нормировании по глинистому сланцу) во многом определяется содержанием в породах последнего из перечисленных компонентов. Доля РЗЭ, связанных в кристаллической решетке кальцита, в общем балансе лантаноидов невелика. Использование кислот с такими концентрациями не позволило получить вытяжку, которая по спектру РЗЭ с высокой вероятностью соответствовала бы распределению РЗЭ в морской воде укского времени. Тем не менее, уксусная кислота больше подходит для достижения этой цели, нежели остальные. 3. Отмечено, что в состав седиментогенного кальцита, помимо стронция, входят также Ni и U. </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Research subject</title><p>Research subject. 14 samples of limestone and one sample of carbonate-siliciclastic rock from siliciclastic-carbonate deposits of the Upper Riphean Uk Formation (the Southern Urals) were studied.</p></sec><sec><title>Methods</title><p>Methods. Mineral and chemical composition of the samples were determined; the main tool for detecting the concentrations of trace elements was the ICPMS method. X-ray diffraction analysis was carried out using a Shimadzu XRD-7000 diffractometer, the content of major (rock-forming) oxides in bulk samples was established by X-ray fluorescence spectrometry on the SRM-35 and Shimadzu XRF 1800 spectrometers. Microelement composition of bulk samples and acidic leachates obtained with using acetic (10%), nitric (36%) and hydrochloric (17%) acids was determined on a Perkin Elmer ELAN 9000 spectrometer.</p></sec><sec><title>Results</title><p>Results. The distribution of lithophile, rare-earth and a number of other elements (Sr, Ni, U) both in bulk samples and in acidic leachates was analyzed. The main carrier phases of these elements were revealed.</p></sec><sec><title>Conclusions</title><p>Conclusions. 1. The use of any listed acids leads to the non-carbonate component entering the solution, including contamination of the “carbonate” leachates by lithophile elements. In particular, a transition Rb, Zr, Li, Th, Ti, Sc to leachates was noted. This process is most active in nitric and hydrochloric acids, less intensive in acetic acid. 2. Among the carriers of rare earth elements (REE) in the studied rocks are clays (1), accessory minerals (2), including phosphate-bearing grains, secondary carbonate phases represented by dolomite and, possibly (3), finely disseminated iron and manganese (oxy)hydroxides (4). It is assumed that the REE pattern in limestones is determined by the content of the epigenetic dolomite. The contribution of lanthanides bound in the sedimentary calcite crystal lattice in the total REE pattern is rather large only in relatively “pure” limestones. However, the use of acids with such concentrations did not allow to obtain a leachate, which the REE pattern with high probability corresponds to the distribution of REE in the Uk time seawater. But acetic acid is more effective for achieving this goal than the others. 3. In addition to Sr, sedimentary calcite also contains Ni and U.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>Южный Урал</kwd><kwd>верхний рифей</kwd><kwd>укская свита</kwd><kwd>известняки</kwd><kwd>микроэлементы</kwd><kwd>литофильные элементы</kwd><kwd>редкоземельные элементы</kwd><kwd>уксусная кислота</kwd><kwd>азотная кислота</kwd><kwd>соляная кислота</kwd><kwd>доломит</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Southern Urals</kwd><kwd>Upper Riphean</kwd><kwd>Uk Formation</kwd><kwd>limestones</kwd><kwd>trace elements</kwd><kwd>lithophile elements</kwd><kwd>rare-earth elements</kwd><kwd>acetic acid</kwd><kwd>nitric acid</kwd><kwd>hydrochloric acid</kwd><kwd>dolomite</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследования выполнены при финансовой поддержке РФФИ (проект № 18-05-00062).</funding-statement><funding-statement xml:lang="en">This work was supported by the Russian Foundation for Basic Research (project No. 18-05-00062).</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">Аренс В.Ж. 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