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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-15102</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/15102</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">Chemical relations of rocks and their graphic representation</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Химические отношения горных пород и их графическое изображение</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="1907-12-01">
        <day>01</day>
        <month>12</month>
        <year>1907</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1907</year>
      </pub-date>
      <volume>1</volume>
      <issue>1</issue>
      <fpage>1</fpage>
      <lpage>19</lpage>
      <history>
        <date date-type="received" iso-8601-date="1907-06-21">
          <day>21</day>
          <month>06</month>
          <year>1907</year>
        </date>
        <date date-type="accepted" iso-8601-date="1907-08-19">
          <day>19</day>
          <month>08</month>
          <year>1907</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1907-12-01">
          <day>01</day>
          <month>12</month>
          <year>1907</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1907 Е. С. Федоров</copyright-statement>
        <copyright-statement xml:lang="en">© 1907 Ye. S. Fedorov</copyright-statement>
        <copyright-year>1907</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/15102">https://pmi.spmi.ru/pmi/article/view/15102</self-uri>
      <abstract xml:lang="ru">
        <p>Кто стремился дать себе ясный отчет о химических отношениях горных пород, должен был с поразительною ясностью видеть все несовершенство наших сведений по этому вопросу. Приходится сознаться, что настоящая, точная наука еще почти не прикоснулась к этому важному вопросу, и господствует здесь самый примитивный эмпиризм. Выставляется большое число типов пород, получающих многочисленные названия, но нет даже общепризнанного критерия для различения одного типа или, точнее, вида породы от другого.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Anyone who has sought to gain a clear understanding of the chemical relations of rocks must have seen with striking clarity all the imperfection of our knowledge on this subject. It must be admitted that true, exact science has as yet scarcely touched this important issue, and that the most primitive empiricism prevails here. A great number of rock types are put forward, receiving numerous names, but there is not even a universally recognized criterion for distinguishing one rock type, or, more precisely, one rock variety from another..</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
  <back>
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      <ref id="ref1">
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  </back>
</article>
