Results 1 to 10 of about 35 (15)
Геофизический журнал, 2023 Mafites and ultramafites manifest in the magnetic field as significant magnetic anomalies due to the high content of magnetite, titanomagnetite and iron-magnesium silicates. Studying the mineralogy and magnetic properties of Archean rocks formed deep in
O. Shestopalova, V. Drukarenko
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Vestnik of Geosciences, 2021 The petrographic features and conditions of the formation of metamorphosed mafic-ultramafic rocks of the Ampelshor complex, which are part of a small massif in the southern part of the Marunke u block of the Polar Urals (Peridotitovyi stream) and are controlled by tectonic thrust faults, have been studied. Muscovite-albite-clinozoisite-amphibole rocks (
N. S. Ulyasheva +2 more
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SYN- AND EPIGENETIC NICKEL MINERALIZATION IN THE KAMCHATKA PLUTONIC MAFITE-ULTRAMAFITE FORMATIONS [PDF]
Bulletin of Kamchatka Regional Association «Educational-Scientific Center». Earth Sciences, 2019 The paper presents data on known objects in the sulfide copper-nickel ore formation in Kamchatka, as well as other ore occurrences and points of nickel mineralization related to certain magmatic formations. The authors have revealed the empirical regularities in the distribution of the background contents of nickel, cobalt, copper, and sulfur in ore ...
R.M. Novakov
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Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences, 2021 In the Polar Urals, in the Central and Western tectonic zones, small bodies of mafic-ultramafic rocks are widespread. Their age, petrographic and geochemical features are poorly studied. The paper presents the results of petrographic and petro-geochemical study of muscovite-albite-epidote-amphibole and pyroxene-amphibole-chlorite rocks of the southern ...
N.S. Ulyasheva, O.V. Udoratina
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Литосфера, 2015 Type-chemical features of high-titanium magnezium-ferruginous micas of granulites, mafite-ultramafites, alkaline rocks, and carbonatites are considered.
A. I. Belkovsky
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LITOSFERA, 2017 In the article is presented data of mineralogy, petrography, geochemistry and isotope-geochronology study Nyashevo mafic-ultramafic massif in Ilmeny-Vishnevogorsk polymethamorphic shear zone. The ultramafic rocks consist of serpentine and chlorite (up to 90 %), accessory and rare minerals - talc, carbonate, tremolite, cromium-magnetite, amphibole ...
Natal’ya M. Valizer +3 more
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Известия Томского политехнического университета. Инжиниринг георесурсов. Т. 332, № 3 [PDF]
, 2021 core +1 more source
Petrology, 2012 The Early Paleoproterozoic Monchegorsk Complex is exposed over an area of 550 km2 and comprises two layered mafite-ultramafite intrusions of different age: the Monchegorsk pluton of ultramafic and mafic rocks and the predominantly gabbroid Main Range Massif (also referred to as the Moncha-Chuna-Volch’i Tundras Massif), which are separated by a fault ...
E. V. Sharkov, A. V. Chistyakov
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