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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">litosphere</journal-id><journal-title-group><journal-title xml:lang="ru">Литосфера</journal-title><trans-title-group xml:lang="en"><trans-title>LITHOSPHERE (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1681-9004</issn><issn pub-type="epub">2500-302X</issn><publisher><publisher-name>A.N. Zavaritsky Institute of Geology and Geochemistry</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24930/1681-9004-2023-23-1-133-146</article-id><article-id custom-type="elpub" pub-id-type="custom">litosphere-1787</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>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>Кристаллохимия глобулярных слоистых силикатов Троицко-Байновского месторождения огнеупорных глин (Средний Урал)</article-title><trans-title-group xml:lang="en"><trans-title>Crystal chemistry of globular layered silicates of the Troitsko-Bainovskoye fre-clay deposit (Middle Urals)</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>Симакова</surname><given-names>Ю. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Simakova</surname><given-names>Yu. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p> 167982, г. Сыктывкар, ул. Первомайская, 54</p></bio><bio xml:lang="en"><p>  54 Pervomaiskaya st., Syktyvkar 167982 </p></bio><email xlink:type="simple">yssimakova@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт геологии ФИЦ Коми НЦ УрО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Geology FRC Komi SC UB RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>01</day><month>03</month><year>2023</year></pub-date><volume>23</volume><issue>1</issue><fpage>133</fpage><lpage>146</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Симакова Ю.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Симакова Ю.С.</copyright-holder><copyright-holder xml:lang="en">Simakova Y.S.</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.lithosphere.ru/jour/article/view/1787">https://www.lithosphere.ru/jour/article/view/1787</self-uri><abstract><sec><title>Объект исследования</title><p>Объект исследования. Состав и кристаллохимия глауконита из верхнемеловых отложений (К2cn-cp) Полдневской площади Троицко-Байновского месторождения огнеупорных глин.</p></sec><sec><title> Материалы и методы</title><p> Материалы и методы. Проведен анализ минералогических и кристаллохимических особенностей глауконита с применением комплекса современных методов исследований (ЦКП “Геонаука”, ИГ ФИЦ Коми НЦ УрО РАН): рентгеновской дифрактометрии, ИК-спектроскопии, сканирующей электронной микроскопии, моделирования дифракционных профилей.</p><p>Результаты исследований и выводы. Определены кристаллохимические особенности глобулярных слоистых силикатов. Выделены две основные разновидности глауконита в породах зайковской свиты – темно-зеленая и светло-зеленая, установлены их различия, степень зрелости. Установлено, что темно-зеленые глобулы близки к глаукониту и являются более “зрелой” разновидностью, светло-зеленые представляют собой неупорядоченный смешанослойный минерал ряда слюда(глауконит)–смектит и выступают продуктом неполного замещения исходного смектита глауконитом. Выявлена фазовая гетерогенность изученных глобул. Установлено, что породы Троицко-Байновского месторождения подвергаются непрерывному преобразованию под воздействием кислых поверхностных и техногенных вод, что ведет к разрушению исходных минералов и появлению вторичной минерализации. Глинистые минералы пород, вмещающих глауконит, представлены неупорядоченными смешанослойными образованиями преимущественно иллит/смектитового типа.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Research subject</title><p>Research subject. The composition and crystal chemistry of glauconite from the open deposits (K2cn-cp) of the Poldnevskaya area of the Troitsko-Bainovskoye deposit of fire clays.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. An analysis of the mineralogical and crystallochemical properties of glauconite was carried out using a set of modern analytical methods (“Geonauka” Centre for Collective Use, IG FRC Komi SC UB RAS): X-ray diffractometry, IR-spectroscopy, scanning electron microscopy, modeling of diffraction profiles.</p></sec><sec><title>Results and conclusions</title><p>Results and conclusions. The crystal-chemical features of glauconite were determined. Two main glauconite varieties (green and light green) in the rocks of the Zaikovskaya suite were distinguished and their differences and degree of maturity have been established. It was found that dark green globules are close to glauconite and represent a more “mature” variety, while the light green ones are a disordered mixed-layer mineral of the mica (glauconite) – smectite series and are a product of incomplete replacement of the original smectite by glauconite. Phase heterogeneity of glauconite globules was revealed. It has been established that the rocks of the Troitsko-Bainovskoe deposit are exposed to intensive transformation under the influence of acidic surface and technogenic waters, which result in the destruction of the initial minerals and the appearance of secondary mineralization. Clay minerals of the glauconite-bearing rocks are represented by disordered mixed-layer phases of predominantly illite/smectite type.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>глауконит</kwd><kwd>зрелость глауконита</kwd><kwd>минералогия</kwd><kwd>кристаллохимия</kwd><kwd>дифрактометрия</kwd><kwd>ИК-спектроскопия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>glauconite</kwd><kwd>crystal-chemical features</kwd><kwd>glauсonite maturity</kwd><kwd>X-ray diffraction</kwd><kwd>IR-spectroscopy</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The author is very grateful to M.F. Samotolkova and V.N. Filippov for their help in conducting analytical work.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Афанасьева Н.И., Зорина С.О., Губайдуллина А.М., Наумкина Н.И., Сучкова Г.Г. 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