The PGE-Cu-Ni Norilsk Deposits and Siberian Traps: Genetic Relationships

Krivolutskaya, Nadezhda

doi:10.1007/978-3-031-09883-3_2

Cited by 2 publications

(3 citation statements)

References 36 publications

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“…The samples used for the study represented by massive sulfide ores from the Southern-2 orebody of the Talnakh intrusion 6 . They are mainly composed of copper (chalcopyrite) and iron (pyrrhotite, pentlandite, troilite) sulfides.…”

Section: Resultsmentioning

confidence: 99%

“…The group of Noril’sk Cu–Ni–PGE sulfide deposits are of unique economic interest globally as they contain significant amount of the world’s reserves of the platinum-group elements (PGE), particularly Pd 1 – 4 . Norilʼsk ranks second after Sudbury in Ni reserves and second after Bushveld in PGE reserves 5 , 6 . Although many intrusions in the Noril’sk area contain Cu–Ni sulfides, only three of them (Talnakh, Khaeralakh, and Noril’sk 1), which are temporally associated with Permian–Triassic basaltic eruptions 7 – 9 , contain economic concentrations of strategic and critical metals, such as Cu, Ni, and PGE.…”

Section: Introductionmentioning

confidence: 99%

“…The Talnakh deposit (together with the Oktyabr’sky deposit) is characterized by a huge mineralogical diversity compared to other magmatic deposits. The predominant number of modern publications are devoted to platinum group minerals 6 , 10 , 11 . Other groups of mineral species have been studied to a much lesser extent 12 .…”

Section: Introductionmentioning

confidence: 99%

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The first identification of cronstedtite in Cu–Ni–PGE ores of the Talnakh intrusion

Yakich,

Zhimuleva,

Rudmin

et al. 2023

Sci Rep

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We present new mineralogical data of cronstedtite from the Southern-2 orebody, located in the South-Western branch of the Talnakh intrusion (Noril’sk area) composed of massive sulfides in which the total amount of oxides and silicates does not exceed 1–3 vol%. The petrographic and mineralogical features of these ores indicated occurrence of fine-grained, fibrous needle like clusters < 50-µm-sized grains of cronstedtite (7.09 Å along its c-axis). This mineral confirmed by a number of analytical techniques (powder X-ray diffraction of balk samples, transmission electron microscopy, scanning electron microscopy, Raman and Infrared spectroscopy). Cronstedtite sporadically contains signals of Al, Ni, Ca and filling the cracks and cavities between sulfides of copper (chalcopyrite) and iron (pyrrhotite, pentlandite). In some cases, cronstedtite contains micron-sized PGM, and associates with magnetite. According the X-ray diffraction analysis of the bulk massive ores besides cronstendtite are established kaolinite, gypsum, calcite, quartz, and cristobalite. The findings of cronstedtite in Noril’sk area have never been mentioned publicly before. Its occurrence is the northernmost known locality in the world. Our results imply that the formation of cronstedtite in the Talnakh intrusion could be possible by the active participation low-temperatures fluids within the relatively near-surface (< 2 km of paleosurface) conditions of intrusion emplacement, in contrast to other deep-seated supergiant Cu–Ni–PGE deposits in the world. The conditions of formation in isolated cavities in fresh pyrrhotite-pentlandite-chalcopyrite massive ores of deep level of the Talnakh intrusion could be favorable for the formation of cronstendtite.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The first identification of cronstedtite in Cu–Ni–PGE ores of the Talnakh intrusion

Yakich,

Zhimuleva,

Rudmin

et al. 2023

Sci Rep

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Method for Determining the Sulfur Isotopic Composition in Ultramafic-Mafic Rocks with a Low Sulfur Content

Krasnova,

Bychkov,

Krivolutskaya

et al. 2023

Moscow University Bulletin Series 4 Geology

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The method of sample decompounding and silver sulfide precipitation for determination of the isotopic composition of sulfur by isotope mass spectrometry has been tried out and improved. The analytics and methodology of preparing test samples for analysis are described, task variations are indicated. The validity of the developed method of sample preparation was verified by a comparative analysis of various methods in three laboratories using internationally certified standards.

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The PGE-Cu-Ni Norilsk Deposits and Siberian Traps: Genetic Relationships

Cited by 2 publications

References 36 publications

The first identification of cronstedtite in Cu–Ni–PGE ores of the Talnakh intrusion

The first identification of cronstedtite in Cu–Ni–PGE ores of the Talnakh intrusion

Method for Determining the Sulfur Isotopic Composition in Ultramafic-Mafic Rocks with a Low Sulfur Content

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