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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-10265</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/10265</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">Local prognosis and criteria for evaluation of Iceland spar occurrences on the basis of mineralogical studies</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Локальный прогноз и критерии оценки проявлений исландского шпата на основе минералогических исследований</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Kukuy</surname>
            <given-names>A. L.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Кукуй</surname>
              <given-names>А. Л.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kukuy</surname>
              <given-names>A. L.</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="1990-12-24">
        <day>24</day>
        <month>12</month>
        <year>1990</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1990</year>
      </pub-date>
      <volume>121</volume>
      <fpage>129</fpage>
      <lpage>135</lpage>
      <history>
        <date date-type="received" iso-8601-date="1989-07-18">
          <day>18</day>
          <month>07</month>
          <year>1989</year>
        </date>
        <date date-type="accepted" iso-8601-date="1989-09-14">
          <day>14</day>
          <month>09</month>
          <year>1989</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1990-12-24">
          <day>24</day>
          <month>12</month>
          <year>1990</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>© A. L. Kukuy</copyright-statement>
        <copyright-year>1990</copyright-year>
        <copyright-holder xml:lang="ru">А. Л. Кукуй</copyright-holder>
        <copyright-holder xml:lang="en">A. L. Kukuy</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/10265">https://pmi.spmi.ru/pmi/article/view/10265</self-uri>
      <abstract xml:lang="ru">
        <p>В результате изучения морфологии и оптических свойств кристаллов исландского шпата на онтогенетической основе, устновлены кристалломорфологическая зональность, связь формы, внутреннего строения и оптических свойств кристалла, оптического материала. Выявление закономерности можно использовать для геолого-разведочного процесса при оценке перспектив объектов и исследовательских работ.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>As a result of studying the morphology and optical properties of Iceland spar crystals on an ontogenetic basis, crystal morphological zonality, the relationship between the shape, internal structure and optical properties of the crystal and optical material were established. Identification of the regularity can be used for geological exploration process in the evaluation of prospects of objects and research works.</p>
      </abstract>
    </article-meta>
  </front>
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