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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-15340</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/15340</article-id>
      <article-categories>
        <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 xml:lang="en">On the question of the origin of twinning stripes in microcline</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>К вопросу о происхождении двойниковых полосок в микроклине</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="1908-12-25">
        <day>25</day>
        <month>12</month>
        <year>1908</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1908</year>
      </pub-date>
      <volume>1</volume>
      <issue>5</issue>
      <fpage>394</fpage>
      <lpage>394</lpage>
      <history>
        <date date-type="received" iso-8601-date="1908-07-03">
          <day>03</day>
          <month>07</month>
          <year>1908</year>
        </date>
        <date date-type="accepted" iso-8601-date="1908-09-22">
          <day>22</day>
          <month>09</month>
          <year>1908</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1908-12-25">
          <day>25</day>
          <month>12</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/15340">https://pmi.spmi.ru/pmi/article/view/15340</self-uri>
      <abstract xml:lang="ru">
        <p>Автор наткнулся на ясные признаки (фиг. 3) образования полосок в микроклине в шлифе с берегов Белого моря (№8 то есть с острова Горелого в Керетском рейде). Я счел долгом представить такое изображение, совершенно отчетливое при увеличении в 120 раз.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The author came across clear signs (Fig. 3) of the formation of stripes in the microcline in thin section from the shores of the White Sea (No. 8, that is, from Gorely Island in the Keretsky roadstead). I felt obliged to present such an image, perfectly clear at 120x magnification.</p>
      </abstract>
    </article-meta>
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