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    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="edn" pub-id-type="custom">PYFBEB</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-16341</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/16341</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Геология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Geology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Trace element composition of silicate minerals from Kunashak Meteorite (L6)</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Редкоэлементный состав силикатных минералов метеорита Кунашак (L6)</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Sukhanova</surname>
            <given-names>Kristina G.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Суханова</surname>
              <given-names>К. Г.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Sukhanova</surname>
              <given-names>Kristina G.</given-names>
            </name>
          </name-alternatives>
          <email>cris.suhanova92@yandex.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0001-5695-0767</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Институт геологии и геохронологии докембрия РАН (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Institute of Precambrian Geology and Geochronology RAS (Saint Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Galankina</surname>
            <given-names>Olga L.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Галанкина</surname>
              <given-names>О. Л.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Galankina</surname>
              <given-names>Olga L.</given-names>
            </name>
          </name-alternatives>
          <email>galankinaol@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0003-2761-2835</contrib-id>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Институт геологии и геохронологии докембрия РАН (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Institute of Precambrian Geology and Geochronology RAS (Saint Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2024-07-26">
        <day>26</day>
        <month>07</month>
        <year>2024</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2024</year>
      </pub-date>
      <volume>270</volume>
      <fpage>877</fpage>
      <lpage>892</lpage>
      <history>
        <date date-type="received" iso-8601-date="2023-11-08">
          <day>08</day>
          <month>11</month>
          <year>2023</year>
        </date>
        <date date-type="accepted" iso-8601-date="2024-05-02">
          <day>02</day>
          <month>05</month>
          <year>2024</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2024-12-25">
          <day>25</day>
          <month>12</month>
          <year>2024</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2024 К. Г. Суханова, О. Л. Галанкина</copyright-statement>
        <copyright-statement xml:lang="en">© 2024 Kristina G. Sukhanova, Olga L. Galankina</copyright-statement>
        <copyright-year>2024</copyright-year>
        <copyright-holder xml:lang="ru">К. Г. Суханова, О. Л. Галанкина</copyright-holder>
        <copyright-holder xml:lang="en">Kristina G. Sukhanova, Olga L. Galankina</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/16341">https://pmi.spmi.ru/pmi/article/view/16341</self-uri>
      <abstract xml:lang="ru">
        <p>Представлена геохимия главных (EPMA) и редких (SIMS) элементов в силикатных минералах (оливин, пироксен, плагиоклаз) равновесного обыкновенного хондрита Кунашак (L6). Вариаций содержания главных элементов в силикатных минералах не обнаружено, что характерно для равновесных хондритов шестого петрологического типа. Низко-Са пироксен и плагиоклаз радиально-лучистой оливин-пироксеновой хондры метеорита Кунашак отличается высоким содержанием редких элементов (Yb, Cr, Nb и Ti – пироксен; Sr, Y, Ti и Zr – плагиоклаз), что не характерно для минералов порфировых оливиновых и оливин-пироксеновых хондр метеорита. Порфировая оливин-пироксеновая хондра метеорита Кунашак отличается повышенным содержанием редких элементов в оливине, в особенности наибольшим содержанием Yb (в среднем 0,12 ppm) относительно порфировой оливиновой и радиально-лучистой оливин-пироксеновой хондр (0,02 ppm). Высокие концентрации редких элементов отражают быструю кристаллизацию радиально-лучистой хондры в газово-пылевом облаке и демонстрируют отсутствие следов гомогенизации редких элементов при термальном метаморфизме. Редкоэлементный состав силикатных минералов метеорита Кунашак сохранил индивидуальные особенности расплава хондр и не был затронут термальным метаморфизмом на родительских телах хондритов. Подобные результаты были получены при исследованиях метеорита Бушхов (L6), что свидетельствует об устойчивости редких элементов в оливине и низко-Са пироксене термальному метаморфизму. Сохранность индивидуальных особенностей хондр позволяет использовать равновесные обыкновенные хондриты для исследования процессов, происходивших на ранних этапах становления Солнечной системы, и изучать механизмы хондро- и планетообразования.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Major (EPMA) and trace (SIMS) element geochemistry in the silicate minerals (olivine, pyroxene and plagioclase) of Kunashak equilibrated ordinary chondrite (L6) is described. No variations in the major element concentrations of the silicate minerals have been found, which is characteristic of equilibrated chondrites of petrological type VI. Low-Са pyroxene and plagioclase from the radiated olivine-pyroxene chondrule of Kunashak Meteorite contain an abundance of trace elements (Yb, Cr, Nb and Ti – pyroxene; Sr, Y, Ti and Zr – plagioclase), which is not characteristic of minerals from the porphyritic olivine and olivine-pyroxene chondrules of the meteorite. The porphyritic olivine-pyroxene chondrule of the Kunashak Meteorite has high trace element concentrations in olivine, in particular, the highest Yb concentration (0.12 ppm on the average) relative to porphyritic and radiated olivine-pyroxene chondrules (0.02 ppm). High trace element concentrations indicate rapid crystallization of a radiated chondrule in a nebula and show no traces of trace element homogenization upon thermal metamorphism. The trace element composition of silicate minerals from Kunashak Meteorite has retained the individual melting pattern of the chondrules and remained unaffected by thermal metamorphism on the parent bodies of the chondrules. Similar results, obtained in the study of Bushkhov Meteorite (L6), indicate that trace elements in olivine and low-Са pyroxene are resistant to thermal metamorphism. The persistence of the individual pattern of the chondrules enables us to use equilibrated ordinary chondrites for the study of processes at early stages in the formation of the Solar System and to better understand chondrule and planet formation mechanisms.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>обыкновенные хондриты</kwd>
        <kwd>редкие элементы</kwd>
        <kwd>оливин</kwd>
        <kwd>пироксен</kwd>
        <kwd>мезостазис</kwd>
        <kwd>ионный зонд</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>ordinary chondrites</kwd>
        <kwd>trace elements</kwd>
        <kwd>olivine</kwd>
        <kwd>pyroxene</kwd>
        <kwd>plagioclase</kwd>
        <kwd>ion probe</kwd>
      </kwd-group>
      <funding-group>
        <funding-statement xml:lang="ru">Исследование выполнено в рамках темы НИР ИГГД РАН FMUW-2022-0005.</funding-statement>
        <funding-statement xml:lang="en">The study was carried out within the framework of the research topic of the IPGG RAS (N FMUW-2022-0005).</funding-statement>
      </funding-group>
    </article-meta>
  </front>
  <body/>
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