Pb isotope data indicate a complex, mantle origin for the Noril'sk-Talnakh ores, Siberia

Wooden, Joseph L.; Czamanske, Gerald K.; Bouse, Robin M.; Лихачев, А. П.; Kunilov, Vladimir E.; Lyul'ko, Victor

doi:10.2113/gsecongeo.87.4.1153

Cited by 40 publications

(9 citation statements)

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“…1, а). Характеристика трапповых свит региона, а также пород интрузивов и связанных с ними руд подробно представлена в многочисленных публикациях отечественных и зарубежных авторов [Zolotukhin et al, 1975;Turovtsev, 2002;Ryabov et al, 2000;Naldrett, 1992;Walker et al, 1994;Wooden et al, 1992].…”

Section: геологическое строение месторожденийunclassified

Pd/Pt IMBALANCE IN LAVAS AND INTRUSIONS OF THE NORILSK-TALNAKH ORE REGION

Dudkin

Marfin

Ivanov

et al. 2021

Geodin. tektonofiz.

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The paper considers the Pd/Pt ratio in the ores of the Norilsk-1 and Talnakh deposits associated with the Permian-Triassic intrusions of the Norilsk type in comparison with that in the lavas of the same age in the Norilsk region. The Pd/Pt mean ratio is 1 in lavas and 2-4 times higher than that in ores and barren horizons of the Norilsk-1 and Talnakh intrusions. Such an increase implies that these elements were borrowed by magma from small and medium-sized crust deposits associated with the previous stage of Permian island-arc volcanism.

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Section: геологическое строение месторожденийunclassified

Pd/Pt IMBALANCE IN LAVAS AND INTRUSIONS OF THE NORILSK-TALNAKH ORE REGION

Dudkin

Marfin

Ivanov

et al. 2021

Geodin. tektonofiz.

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“…The explanation for this probably lies in the mechanism and direction by which sulphide droplets are transported, and the relative difficulty of amalgamating and depositing them, a point to which we return. Even where S-rich country rocks do exist in immediate proximity to host intrusions, and a strong match in S isotopic composition exists between ores and country rocks exists as at Noril'sk , there are substantive arguments about whether the locally derived S is the sole or even the most important component in the overall evolution of the mineral system (Wooden et al, 1992, Wooden et al, 1993. At Nori'sk, have pointed out that the basalts supposedly related to the ore forming intrusions have S isotopic composition close to mantle values and do not mimic the heavy evaporate-like signatures seen in the orebodies.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

The mineral system approach applied to magmatic Ni–Cu–PGE sulphide deposits

Barnes

Cruden

Arndt

et al. 2016

Ore Geology Reviews

232

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Most magmatic Ni-Cu-PGE sulphide deposits occur within long-lived magma pathways fed by high degree partial melts of the mantle. Holistic mineral-system analysis for such deposits has some parallels with dominantly hydrothermal systems, but also some important differences.Major provinces are associated with large volumes of magma erupted at margins of ancient Archaean cratons, and are associated with small intrusions through which large volumes of magmas have passed. There is no demonstrable association with any particular magma type, although in most provinces the ores are found associated with the most primitive available magmas, whatever these may be. Or-bearing intrusions tend to form early in the evolution of the host province, although exceptions exist to this rule, and these intrusions typically account for very small proportions of the volumes of the province as a whole.Ore deposition is favoured by prolonged high-volume flow over a horizontal floor. This floor may take the form of the base of a channelized sill, tube or blade-shaped dyke, which account for most of the known host igneous bodies to significant ore deposits. Deposition mechanisms may be chemical or physical, but large high-grade deposits require a major component of transported sulphide liquid, initially carried as droplets. Late stage migration of sulphide liquid as gravity currents within intrusion networks, coupled with infiltration and melting of floor rocks, accounts for the common observation in mafic intrusion hosted deposits of cross cutting relationships between massive sulphides, host intrusions and country rocks.The following set of criteria is proposed in targeting and evaluating Ni-Cu-PGE sulphide systems: 1) nature of magmatism and relationship to pre-existing cratonic architecture; 2) magmatic and structural controls on the development of protracted-flow magma conduits; 3) access to crustal S A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTNi-Cu-PGE mineral systems Barnes May 2015 2 sources at some point along the pathway; 4) favorable intrusion geometry and emplacement style for deposition, reworking and upgrading of sulphide magmas, and 5) favorable structural history and erosional level for preservation and detectability.These components can be translated into mappable geological criteria. At the predictive targeting scale, the key features are proximity to ancient cratonic boundaries and long-lived, trans-crustal structures, and relationship to voluminous mafic or ultramafic magmatism typically with high Mg and low Ti contents, but otherwise lacking distinctive characteristics. At the detection scale, there are two distinct approaches: recognition of high volume magma pathways with prolonged flow-through operating at length scales of km based on morphological, petrological, geophysical and structural observations; and identification of the petrographic and geochemical signals of accumulation or extraction of sulphide liquid.

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“…2b), the Pb isotopic composition of O horizon samples collected near nickel processing plants cannot be distinguished from the isotope signature of KEP O horizon samples. Figure 4 compares the Pb isotope signatures of the O horizon samples from Zapoljarniy, Monchegorsk, and Nikel and the KEP mosses with that measured in the filter residues and with the Pb from Noril'sk Ni ores (Wooden et al, 1992). The filter residues reflect at least three Pb components.…”

Section: Industrial Pb From Nw Russia?mentioning

confidence: 99%

“…A possible exception are certain O horizon samples tending towards the gasoline Pb line which may have received a portion of their Pb from this source (see Haack et al (2002Haack et al ( , 2003; (2) Bracke (1998);Chow et al (1975); Horn et al (1987); Kober et al (1999); Monna et al (1997);Mukai et al (1994); (3) Hansmann and Köppel (2000); (4) Haack et al (2002); (5) Carignan and Gariépy (1995); (6) Wooden et al (1992). .…”

Section: Lead From European Gasoline?mentioning

confidence: 99%