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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">10.32454/0016-7762-2024-66-2-101-111</article-id><article-id custom-type="elpub" pub-id-type="custom">geology-1043</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>Лизардит-«кольскит» из щелочно-ультраосновного массива Лесная Варака (Кольский полуостров): новые данные</article-title><trans-title-group xml:lang="en"><trans-title>Lizardite “kolskite” from the Lesnaya Varaka alkaline ultrabasic massif (Kola peninsula): new data</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-5100-4687</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Булах</surname><given-names>М. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Bulakh</surname><given-names>M. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Булах Мария Олеговна — кандидат геолого-минералогических наук, младший научный сотрудниккафедры минералогии</p><p>1, Ленинские горы, г. Москва 119991</p></bio><bio xml:lang="en"><p>Maria O. Bulakh — Cand. Sci. (Geol.-Min.), junior researcher, Department of Mineralogy, Geological Faculty</p><p>1, Leninskie Gory, Moscow 119991</p></bio><email xlink:type="simple">aregon27@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 «Московский государственный университет им. М.В. Ломоносова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>06</day><month>08</month><year>2024</year></pub-date><volume>66</volume><issue>2</issue><fpage>101</fpage><lpage>111</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Булах М.О., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Булах М.О.</copyright-holder><copyright-holder xml:lang="en">Bulakh M.O.</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/1043">https://www.geology-mgri.ru/jour/article/view/1043</self-uri><abstract><sec><title>Введение</title><p>Введение. Работа посвящена редкой морфологической разновидности магнезиального серпентина, описанной в 1939 г. в жилах щелочно-ультраосновного массива Лесная Варака (Кольский полуостров) под названием «кольскит» и долгое время считавшейся антигоритом.</p></sec><sec><title>Цель</title><p>Цель. Диагностика полиморфной модификации, выявление кристаллохимических особенностей и определение возможного генезиса «кольскита».</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Образцы изучены методами электронно-зондового анализа и сканирующей электронной микроскопии (сканирующий электронный микроскоп Jeol JSM-IT500, оснащенный энергодисперсионным спектрометром INCA X-Max), порошковой рентгенографии, инфракрасной спектроскопии (ИК-Фурье спектрометр ФСМ-1201) и рамановской спектроскопии (прибор EnSpectr R532).</p></sec><sec><title>Результаты</title><p>Результаты. Показано, что серпентин-«кольскит» представлен лизардитом с эмпирической формулой (Mg2.79Al0.04Fe³+0.01)∑2.84[Si2.06O5](OH)4. Рассчитанные параметры тригональной элементарной ячейки: а = 5,32(1) Å, c = 7,88(2) Å, V = 193,0(1) Å³. Увеличение параметра с по сравнению с таковым у типичного для ультраосновных массивов лизардита, развитого по оливину, указывает на расширение межслоевого расстояния и связано с гидратацией серпентина.</p></sec><sec><title>Заключение</title><p>Заключение. Формирование «червеобразных» агрегатов лизардита могло происходить либо путем замещения вермикулита под действием низкотемпературных щелочных гидротерм, либо в результате гипергенного изменения более раннего апооливинового серпентина.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. A rare morphological variety of magnesian serpentine, described in 1939 in the veins of the Lesnaya Varaka alkaline ultrabasic massif (Kola Peninsula) under the name “kolskite” is studied. For a long time, this variety has been considered an antigorite.</p></sec><sec><title>Aim</title><p>Aim. Identification of the polymorphic modification of “worm-like” serpentine; determination of its crystal chemical features and possible genesis.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. Samples were studied using electron probe analysis and scanning electron microscopy by a Jeol JSM-IT500 scanning electron microscope equipped with an INCA X-Max energy dispersion spectrometer; powder X-ray diffraction; infrared spectroscopy using a FSM-1201 IR Fourier spectrometer; and Raman spectroscopy using a EnSpectr R532 spectrometer.</p></sec><sec><title>Results</title><p>Results. Serpentine “kolskite” is represented by lizardite with the empirical formula (Mg2.79Al0.04Fe3+0.01)∑2.84[Si2.06O5](OH)4. The calculated parameters of the trigonal unit cell are as follows: a = 5.32(1) Å, c = 7.88(2) Å, V = 193.0(1) Å3. An increase in parameter c compared to that of apoolivine lizardite typical of ultrabasic objects indicates an expansion of the interlayer distance and is associated with serpentine hydration.</p></sec><sec><title>Conclusion</title><p>Conclusion. The formation of “worm-like” lizardite aggregates could occur either by replacing vermiculite under the action of low-temperature alkaline hydrothermal solutions, or as a result of hypergenic alteration in the earlier apoolivine serpentine.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>серпентин</kwd><kwd>лизардит</kwd><kwd>ИК-спектр</kwd><kwd>КР-спектр</kwd><kwd>массив Лесная Варака</kwd></kwd-group><kwd-group xml:lang="en"><kwd>serpentine</kwd><kwd>lizardite</kwd><kwd>IR spectrum</kwd><kwd>Raman spectrum</kwd><kwd>Lesnaya Varaka massif</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">Белькова Л.Н. 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