Nickel chlorites in the oxide-silicate nickel deposits of the Urals

Lazarenkov, V. G.; Talovina, I. V.; Воронцова, Н. И.; Мезенцева, О. П.; Рыжкова, С. О.

doi:10.1134/s0024490211030072

Cited by 6 publications

(6 citation statements)

References 3 publications

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“…The study of the Kempirsay nickel deposits shows that they have a two-tier structure, in which the hypergenic upper tier has a continuation, in the form of the lower hydrothermal tier, which agrees with the data of Talovina I. V. [13,19], Lazarenkov V.G., Talovina I.V. et al [14,15], and, thus, increases the prospects for finding new ore objects at depth.…”

Section: The Results Obtainedsupporting

confidence: 82%

“…In the Middle and Southern Urals (Russia), the nickel deposits of the Serov and Ufaleya [14,15,20] weathering crusts differ in structure and mineral composition from those of the Kempirsay ultramafite massif. For the Kempirsay group of deposits, the nickel weathering crust profile is represented by three mineral zones: 1-leached (kerolitized) serpentinites; 2-nontronites; and 3-ochers.…”

Section: Discussion Of the Resultsmentioning

confidence: 99%

“…The Kempisay massif lies in the overthrust allochthon on the Samara zone of the Mugodzhar. The massif of the ultramafic rocks of the Southern Urals is in Russian territory and occurs in the form of overthrust allochthon [14,15]. All of these ultramafic structural units are under the strong influence of the Main Ural Fault.…”

Section: Geological Structure Of the Areamentioning

confidence: 99%

“…Taken together, they mark the surface of the detachment and super-regional overthrust cover. The influence of the Main Ural Fault on ultramafic rocks probably affects their hydrothermal alteration [14,15]. Nickel mineralization is located in the weathering crust of gabbro-amphibolites, whose thickness reaches 240 m. The weathering crust is represented by: (1) nontronitized serpentinites and gabbro-amphibolites; (2) leached, silicified serpentinites; and (3) the ocher zone.…”

Section: Geological Structure Of the Areamentioning

confidence: 99%

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Peculiarities of Dynamics of Hypergenic Mineral Transformation of Nickel Weathering Crusts of Ultramafic Rocks of the Kempirsay Group of Deposits in Western Kazakhstan

et al. 2022

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Nickel weathering ores are used to produce metallic nickel, stainless steels, and nickel sulfate, the main component of batteries. The global production of nickel from weathering ores is increasing and has surpassed production from sulfide magmatic deposits. The efficiency of the mining and processing of nickel ores from weathering rocks is determined by their mineralogical composition. The weathering crust profile of the Kempirsay ultramafite massif is divided into three zones—leached (kerolitized) serpentinites, nontronites, and final hydrolysis minerals (later referred to as “ochers”). The kerolitized zone consists of a mixture of Ni-bearing talc and saponites (later referred to as “kerolite”). During the geological mapping of the Donskoye, Buranovskoye, and Shelektinskoye deposits, the products of ultramafite hypergenic transformation into disintegrated and leached serpentinites, kerolites, nontronites, and ochers were selected and studied. For this purpose, 44 rock samples were studied via X-ray diffractometric and thermal analyses, supplemented with data from chemical, microscopic, and granulometric determinations. Based on the obtained numerical parameters of the crystalline structure of the weathering products, the thermochemical values were obtained. The hypergenic transformation of the initial minerals and their subsequent transformation were traced. The trace element distribution along the profile of the serpentinite weathering ores is related to the initial material composition of the ultramafites. The accumulation of nickel in industrial concentrations is associated with the nontronite–kerolite zone. X-ray diffractometric analysis can be used as a fast and reliable method for controlling the nickel content of ores and monitoring their mineralogical composition.

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Section: The Results Obtainedsupporting

confidence: 82%

Section: Discussion Of the Resultsmentioning

confidence: 99%

Section: Geological Structure Of the Areamentioning

confidence: 99%

Section: Geological Structure Of the Areamentioning

confidence: 99%

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Peculiarities of Dynamics of Hypergenic Mineral Transformation of Nickel Weathering Crusts of Ultramafic Rocks of the Kempirsay Group of Deposits in Western Kazakhstan

et al. 2022

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“…The residual crust is relict; initially it could form the lower horizons of a rather powerful primary weathering crust. During the Albian-Cenomanian period, the upper horizons of the latter were partially eroded, partially re-deposited, and underwent changes in the conditions of the recovery environment when the area was swamped and affected the laterites of H 2 S и CO 2 (Тalovina et al, 2010;Mezentseva et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Advances in Raw Material Industries for Sustainable Development Goals

Litvinenko¹

2020

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Geogenic and agricultural controls on the geochemical composition of European agricultural soils

et al. 2013

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Purpose: Concern about the environmental impact of agriculture caused by intensification is growing as large amounts of nutrients and contaminants are introduced into the environment. The aim of this paper is to identify the geogenic and agricultural controls on the elemental composition of European, grazing and agricultural soils. Materials and methods:Robust factor analysis was applied to data series for Al,B,Ca, Cd,Co, Cu, Fe, K, Mg,Mn, Na,Ni, P, S, Se, Sr, U, Zn (ICP-MS) and SiO 2 , K 2 O, Na 2 O, Fe 2 O 3 , Al 2 O 3 (XRF) based on the European GEMAS dataset. In addition, the following general soil properties were included: clay content, pH, chemical index of alteration (CIA), loss on ignition (LOI), cation exchange capacity (CEC), total organic carbon (TOC) and total carbon and total sulfur. Furthermore, this dataset was coupled to a dataset containing information of historic P 2 O 5 fertilization across Europe. Also, a mass balance was carried out for Cd, Cu and Zn to determine if concentrations of these elements found in the soils have their origin in historic P 2 O 5 fertilization.Results and discussion: Seven geogenic factors and one agricultural factor were found of which four prominent ones (all geogenic): chemical weathering, reactive iron-aluminum oxide minerals, clay minerals and carbonate minerals. Results for grazing and agricultural soils were near identical, which further proofs the prominence of geogenic controls on the total elemental composition. When the cumulative amount of P 2 O 5 fertilization was considered, no extra agriculture-related factors became visible. The mass balance confirms these observations. Conclusion: Overall, the geological controls are more important for the total soil chemistry in agricultural and grazing land soils than the anthropogenic controls.

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Nickel chlorites in the oxide-silicate nickel deposits of the Urals

Cited by 6 publications

References 3 publications

Peculiarities of Dynamics of Hypergenic Mineral Transformation of Nickel Weathering Crusts of Ultramafic Rocks of the Kempirsay Group of Deposits in Western Kazakhstan

Peculiarities of Dynamics of Hypergenic Mineral Transformation of Nickel Weathering Crusts of Ultramafic Rocks of the Kempirsay Group of Deposits in Western Kazakhstan

Advances in Raw Material Industries for Sustainable Development Goals

Geogenic and agricultural controls on the geochemical composition of European agricultural soils

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