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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">geology</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Геология и разведка</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of higher educational establishments. Geology and Exploration</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0016-7762</issn><issn pub-type="epub">2618-8708</issn><publisher><publisher-name>Sergo Ordzhonikidze Russian State University for Geological Prospecting</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32454/0016-7762-2019-1-32-38</article-id><article-id custom-type="elpub" pub-id-type="custom">geology-360</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МИНЕРАЛОГИЯ, ПЕТРОГРАФИЯ, ЛИТОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MINERALOGY, PETROGRAPHY, LITHOLOGY</subject></subj-group></article-categories><title-group><article-title>Минеральный состав и геммологические характеистики ювелирно-поделочных аммонитов Республики Адыгея</article-title><trans-title-group xml:lang="en"><trans-title>Mineral composition and gemological characteristics of jewelry-ornamental ammonites of the Republic of Adygea</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петроченков</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrochenkov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>23, Миклухо-Маклая ул., г. Москва 117997</p></bio><bio xml:lang="en"><p>23, Miklouho-Maklay 's street, Moscow 117997</p></bio><email xlink:type="simple">p-d-a@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Российский государственный геологоразведочный университет имени Серго Орджоникидзе»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian State Geological Prospecting University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>08</day><month>03</month><year>2019</year></pub-date><volume>0</volume><issue>1</issue><fpage>32</fpage><lpage>38</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Петроченков Д.А., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Петроченков Д.А.</copyright-holder><copyright-holder xml:lang="en">Petrochenkov D.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.geology-mgri.ru/jour/article/view/360">https://www.geology-mgri.ru/jour/article/view/360</self-uri><abstract><p>Впервые приведены данные по минеральному составу и геммологические характеристики ювелирно-поделочных аммонитов Республики Адыгея. Аммониты состоят преимущественно из кальцита с включениями кварца, глауконита, каолинита, арагонита, пирита, апатита и гематита. Стенки и перегородки раковин преимущественно утратили исходный арагонитовый состав и состоят из кальцита с включениями пирита и апатита. Арагонит сохраняется фрагментарно в стенках и перегородках раковин. Из элементов-примесей кальцит содержит в среднем, мае. %: Mg 0,62, Мл 0,31 и Fe 1,26. Цвет и прозрачность кальцита определяется структурными особенностями кристаллов и минеральными включениями. Аммониты Республики Адыгея имеют широкий диапазон размеров и связаны с отложениями нижнего мела. По декоративности и технологическим характеристикам аммониты могут использоваться в качестве ювелирно-поделочного материала для изготовления широкого ассортимента изделий.</p></abstract><trans-abstract xml:lang="en"><p>For the first time, data on the mineral composition and gemological characteristics of the jewelry-ornamental ammonites of the Republic of Adygea have been presented. Ammonites consist mainly of the calcite with inclusions of quartz, glauconite, kaolinite, aragonite, pyrite, apatite and hematite. The walls and partitions of the shells mainly lost the original aragonite composition and consist of calcite with inclusions of pyrite and apatite. Aragonite is preserved fragmentary in the walls and partitions of the shells. Calcite contains some elements-admixture, which average volumes, (wt. %), are: Mg0,62, Mn0,31 and Fe 1,26. The color and transparency of calcite is determined by the structural features of the crystals and mineral inclusions. Ammonites of the Republic of Adygea have a wide range of sizes and are associated with sediments of the lower Cretaceous. According to the decorative and technological characteristics ammonites can be used as a jewelry-ornamental material for the production of a wide range of ware.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ювелирно-поделочное сырьё</kwd><kwd>ювелирные изделия</kwd><kwd>аммониты</kwd><kwd>кальцит</kwd><kwd>нижнемеловые отложения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>jewelry and ornamental raw materials</kwd><kwd>jewelry</kwd><kwd>ammonites</kwd><kwd>calcite</kwd><kwd>Lower Cretaceous sediments</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Быстров И.Г., Петроченков Д.А., Барабошкин Е.Ю. Нижнемеловые ювелирно-поделочные аммониты Республики Дагестан // Известия Дагестанского государственного педагогического университета. 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