Cl-rich amphiboles and micas in rocks of the Middle Riphean Kusa-Kopan complex of mafic layered intrusions (southern Urals, Russia)

Shagalov, E. S.; Holodnov, Vladimir V.; Sustavov, Sergey G.; Киселева, Д. В.

doi:10.1007/s00710-021-00742-2

Cited by 3 publications

(1 citation statement)

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“…The Cl concentrations of amphiboles in basaltic magma can reach several thousand μg/g and even 1 wt.% (Webster et al, 2018), given relatively high amphibole/melt partition coefficients for Cl in the hydrous basaltic melts (Dalou et al, 2014). Chlorine concentrations for amphiboles in Andean basaltic-andesite volcanic rocks range from 0.15 wt.% to 0.24 wt.% (Chambefort et al, 2013;Webster et al, 2018); extremely high-Cl amphiboles (3-5 wt.% Cl) were also found in mafic intrusion rocks of the Kusa-Kopan complex (Shagalov et al, 2021). However, EPMA data of the amphiboles in the lamprophyre in this study indicate very low Cl concentrations of 0.01-0.04 wt.% (Table 2) which are consistent with amphiboles of calc-alkaline lamprophyres in Western Australia (≤ 0.03 wt.%) (Choi et al, 2019).…”

Section: Strong Depletion Of Heavy Halogens In Lamprophyresmentioning

confidence: 99%

Heavy halogen compositions of lamprophyres derived from metasomatized lithospheric mantle beneath eastern North China Craton

Zheng,

Wang,

et al. 2023

American Mineralogist

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Halogens and other volatiles are widely recycled into the deep mantle by subduction and are key components to metasomatize the sub-continental lithospheric mantle (SCLM).Lamprophyres are well-known to be rich in volatiles and are important for understanding the halogen characteristics of the metasomatized SCLM and/or the mobilization of This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.

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Section: Strong Depletion Of Heavy Halogens In Lamprophyresmentioning

confidence: 99%

Heavy halogen compositions of lamprophyres derived from metasomatized lithospheric mantle beneath eastern North China Craton

Zheng,

Wang,

et al. 2023

American Mineralogist

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Geochemistry of vesuvianite from contact-metasomatic rocks of mineral mines in the Southern Urals

Stativko,

Rat'kovskiy,

Kuznetsov

2024

Vestnik of Geosciences

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A mineralogical and geochemical study of vesuvianite from mineral aggregates sampled in the Zelentsovskaya, Nikolaje-Maximilianovskaya, Akhmatovskaya and Shishimskaya mines located at the outer contact of the Kusa-Kopan intrusion of the Southern Urals was carried out. Vesuvianite from the silicate-carbonate rock (Zelentsovskaya mine) is significantly enriched in Fe, V, Cr, Y, Zr, Th, Sn, and Cl, and the REE distribution spectrum it is close to that for garnets from the same rocks. Vesuvianite from calcite-garnet vein in chlorite schist (Nikolaje-Maximilianovskaya mine) is enriched in U, and REE distribution spectra there are significantly differentiated, which is explained by the removal of incompatible elements. Vesuvianite from rodingites (Akhmatovskaya mine) is enriched in Mn, Ni, Zn, Sr, Nb and volatile components (F and Cl), and the REE distribution spectra are conformal to each other, which testifies to a stable geochemical equilibrium in the rock. Vesuvianite from the skarn (Shishimskaya mine) is in paragenesis with garnet, so it is significantly enriched in Al, LREE and water, and depleted in impurity elements. The content of trace and rare-earth elements in all vesuvianites shows signs of contact metasomatism: the peculiarities of their composition depend on the mineral paragenesis and the influence of the frame rocks — gabbroids of the Kusa-Kopan intrusive complex.

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Microanalytical Investigation of Prehistoric Colorants from Uralian Rock Art (Ignatievskaya Cave and Idrisovskaya II and Zmiev Kamen’ Pictographs)

et al. 2022

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Uralian parietal and rock art (cave paintings and pictographs, or “pisanitsy”) represents a unique archaeological and cultural phenomenon, comprising 90 sites stretching for more than 800 km from north to south, which date from the Paleolithic era extending into the present Holocene epoch. The identification of the nature of prehistoric colorants provides an insight into their provenance, manufacture and utilization, as well as contributing to the conservation and restoration of drawings. The studies of mineral, elemental and organic phase composition of the colorant micro-samples from the drawings of Ignatievskaya cave and Idrisovskaya II and Zmiev Kamen’ pictographs (Southern and Middle Urals, Russia) discussed in the present work were carried out using a special set of microspectroscopic methods (SEM-EDS and Raman spectroscopy) offering high spatial resolution. The fatty acid composition of the organic phase was analyzed by GC–MS. The technology of colorant manufacture could have included thorough grinding and mixing of unheated hematite with an organic binder made from animal fat and a clayey extender in order to achieve the desired hue and intensity of the color. It is possible that the colorant was applied in layers (Idrisovskaya II and Zmiev Kamen’ pictographs). The development of authigenic phosphate and sulfate (gypsum) mineralization, which is observed in all studied sites, as well as oxalate encrustation on the Idrisovskaya II pictograph, indicates the conditions and processes of secondary mineral formation.

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Cl-rich amphiboles and micas in rocks of the Middle Riphean Kusa-Kopan complex of mafic layered intrusions (southern Urals, Russia)

Cited by 3 publications

References 60 publications

Heavy halogen compositions of lamprophyres derived from metasomatized lithospheric mantle beneath eastern North China Craton

Heavy halogen compositions of lamprophyres derived from metasomatized lithospheric mantle beneath eastern North China Craton

Geochemistry of vesuvianite from contact-metasomatic rocks of mineral mines in the Southern Urals

Microanalytical Investigation of Prehistoric Colorants from Uralian Rock Art (Ignatievskaya Cave and Idrisovskaya II and Zmiev Kamen’ Pictographs)

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