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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-10826</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/10826</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Без раздела</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Without section</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Economic problems of rational utilization of complex deposits</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Экономические проблемы рационального использования сложных месторождений</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Stepanova</surname>
            <given-names>G. G.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Степанова</surname>
              <given-names>Г. Г.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Stepanova</surname>
              <given-names>G. G.</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="1981-05-11">
        <day>11</day>
        <month>05</month>
        <year>1981</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1981</year>
      </pub-date>
      <volume>90</volume>
      <fpage>33</fpage>
      <lpage>36</lpage>
      <history>
        <date date-type="received" iso-8601-date="1981-01-07">
          <day>07</day>
          <month>01</month>
          <year>1981</year>
        </date>
        <date date-type="accepted" iso-8601-date="1981-03-03">
          <day>03</day>
          <month>03</month>
          <year>1981</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1981-05-11">
          <day>11</day>
          <month>05</month>
          <year>1981</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>© G. G. Stepanova</copyright-statement>
        <copyright-year>1981</copyright-year>
        <copyright-holder xml:lang="ru">Г. Г. Степанова</copyright-holder>
        <copyright-holder xml:lang="en">G. G. Stepanova</copyright-holder>
        <license xlink:href="http://creativecommons.org/licenses/by/4.0">
          <license-p>CC BY 4.0</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/10826">https://pmi.spmi.ru/pmi/article/view/10826</self-uri>
      <abstract xml:lang="ru">
        <p>Развитие электро- и радиотехнической промышленности вызывает огром­ный спрос на высококачественные электроизоляционные материалы и диэлек­трики, к числу которых в первую очередь относится слюда. Основным сырьем для изготовления слюдяной изоляции служат природные кристаллы мусковита и флогопита. Равноценные заменители для этих целей до сих пор создать не удалось ...</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The development of electrical and radio engineering industry causes a huge demand for high quality electrical insulating materials and dielectrics, which primarily includes mica. Natural crystals of muscovite and phlogopite serve as the main raw material for the manufacture of mica insulation. Equivalent substitutes for these purposes have not yet been created ...</p>
      </abstract>
    </article-meta>
  </front>
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