Genesis of precious metal mineralization in intrusions of ultramafic, alkaline rocks and carbonatites in the north of the Siberian platform

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Genesis of precious metal mineralization in intrusions of ultramafic, alkaline rocks and carbonatites in the north of the Siberian platform	10 MB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.3390/min11040354

Title: Genesis of precious metal mineralization in intrusions of ultramafic, alkaline rocks and carbonatites in the north of the Siberian platform
Creator: Sazonov, Anatoly M.
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Romanovsky, Aleksei E.
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Gertner, Igor F.
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Zvyagina, Elena A.
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Krasnova, Tatyana S.
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Grinev, Oleg M.
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Silyanov, Sergey A.
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Kolmakov, Yurii V.
Date: 2021
DOI: 10.3390/min11040354
Description: The gold and platinum-group elements (PGE) mineralization of the Guli and Kresty intrusions was formed in the process of polyphase magmatism of the central type during the Permian and Triassic age. It is suggested that native osmium and iridium crystal nuclei were formed in the mantle at earlier high-temperature events of magma generation of the mantle substratum in the interval of 765–545 Ma and were brought by meimechite melts to the area of development of magmatic bodies. The pulsating magmatism of the later phases assisted in particle enlargement. Native gold was crystallized at a temperature of 415–200◦C at the hydrothermal-metasomatic stages of the meimechite, melilite, foidolite and carbonatite magmatism. The association of minerals of precious metals with oily, resinous and asphaltene bitumen testifies to the genetic relation of the mineralization to carbonaceous metasomatism. Identifying the carbonaceous gold and platinoid ore formation associated genetically with the parental formation of ultramafic, alkaline rocks and carbonatites is suggested.

Created: 31-05-2022

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Геолого-географический факультет Genesis of precious metal mineralization in intrusions of ultramafic, alkaline rocks and carbonatites in the north of the Siberian platform