Тантало-ниобаты в породах федотовской свиты верхнего рифея (Средний Урал)

B. M. Osovetsky, S. B. Suslov, I. V. Badyanova

Аннотация


Рассмотрены петрографические особенности пород федотовской свиты верхнего рифея на западном склоне Среднего Урала. Описаны минеральные формы нахождения тантало-ниобатов (ильменорутил, танталорутил, иттроколумбит, поликраз) и геохимические закономерности распределения концентраций ниобия в разрезах скважин. Установлена приуроченность высоких концентраций ниобия к прослоям метариолитов и метабазальтов. Выявлена ритмичность в распределении ниобия по разрезу углистосерицит-кварцевых сланцев с чередованием прослоев с высокими и низкими концентрациями. Результаты исследований могут быть использованы для решения теоретических вопросов формирования черносланцевых формаций, а также при прогнозировании поисковых работ на комплексные россыпепроявления.

Ключевые слова


федотовская свита; черные сланцы; тантало-ниобаты; Средний Урал; петрография; минералогия; геохимия; электронная микроскопия; рентгенофлуоресцентный анализ

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Литература


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DOI: http://dx.doi.org/10.17072/psu.geol.18.4.332

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(c) 2019 B. M. Osovetsky, S. B. Suslov, I. V. Badyanova

URL лицензии: http://creativecommons.org/licenses/by/3.0/