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  <front>
    <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="pmi" pub-id-type="custom">pmi-15303</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/15303</article-id>
      <article-categories/>
      <title-group>
        <article-title xml:lang="en">A dubious twin of the Augite from Monte Russia</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Сомнительный двойник авгита из Монте России</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Fedorov</surname>
            <given-names>Ye. S.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Федоров</surname>
              <given-names>Е. С.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Fedorov</surname>
              <given-names>Ye. S.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru"> (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en"> (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="1908-09-01">
        <day>01</day>
        <month>09</month>
        <year>1908</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1908</year>
      </pub-date>
      <volume>1</volume>
      <issue>3</issue>
      <fpage>233</fpage>
      <lpage>233</lpage>
      <history>
        <date date-type="received" iso-8601-date="1908-03-30">
          <day>30</day>
          <month>03</month>
          <year>1908</year>
        </date>
        <date date-type="accepted" iso-8601-date="1908-05-29">
          <day>29</day>
          <month>05</month>
          <year>1908</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1908-09-01">
          <day>01</day>
          <month>09</month>
          <year>1908</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1908 Е. С. Федоров</copyright-statement>
        <copyright-statement xml:lang="en">© 1908 Ye. S. Fedorov</copyright-statement>
        <copyright-year>1908</copyright-year>
        <copyright-holder xml:lang="ru">Е. С. Федоров</copyright-holder>
        <copyright-holder xml:lang="en">Ye. S. Fedorov</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/15303">https://pmi.spmi.ru/pmi/article/view/15303</self-uri>
      <abstract xml:lang="ru">
        <p>Специально занявшись пироксенами, я встречал, между прочим, сросшиеся кристаллы, напоминающие двойниковые срастания. Позволю себе здесь привести результат одного такого исследования, по числовым данным которого составлена приложенная диаграмма.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Having specially studied pyroxenes, I came across, among other things, intergrown crystals resembling twin intergrowths. Let me present here the results of one such study, based on the numerical data of which the attached diagram was compiled.</p>
      </abstract>
    </article-meta>
  </front>
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      <ref id="ref1">
        <label>1</label>
        <mixed-citation xml:lang="ru">-</mixed-citation>
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