Influence of Host Marble Rocks on the Formation of Intrusive Alkaline Rocks and Carbonatites of Sangilen (E. Siberia, Russia)

Никифоров, А. В.; Дубинина, Е. О.; Polyakov, Nikolay A.; Сугоракова, А. М.; Khertek, Aylan Kymzay-oolovna

doi:10.3390/min11070666

Cited by 3 publications

(3 citation statements)

References 30 publications

(47 reference statements)

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“…It can be seen from Figure 8 that 4 to 0.4 vol% of the carbonate remains during decarbonation of the initial sedimentary carbonate. Such an effect is regularly observed during the interaction of basaltic melts with carbonates derived from host rocks (e.g., Dubinina et al, 2019;Nikiforov et al, 2021;Nosova et al, 2021).…”

Section: Origin Of Ferrocarbonatesmentioning

confidence: 92%

“…Oxygen and carbon isotope compositions of the groundmass ferrocarbonates and plagioclase-hosted ferrocarbonates were analysed using a CF-IRMS DeltaV+ instrument (Thermo, Finnigan) with a GasBenchII configuration and PAL autosampler, after decomposition of hand-picked separates in phosphoric acid at 70 °C (Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry Russian Academy of Sciences, Moscow). The technique is described in detail by Nikiforov et al (2021). Due to the low content of carbonates in the silicate matrix (1%-3%), the δ 13 C and δ 18 O values were measured at an estimated accuracy ±0.4% and ±0.8‰ (1 σ), respectively.…”

Section: Analytical Techniquesmentioning

confidence: 99%

“…Due to the low content of carbonates in the silicate matrix (1%-3%), the δ 13 C and δ 18 O values were measured at an estimated accuracy ±0.4% and ±0.8‰ (1 σ), respectively. Measured values of δ 13 C and δ 18 O are expressed relative to VPDB and VSMOW, respectively (Nikiforov et al, 2021). Calibration of δ 13 C and δ 18 O values on the VPDB and VSMOW scales was performed by measuring the NBS 19 and NBS 18 international standards in the same analytical series.…”

Section: Analytical Techniquesmentioning

confidence: 99%

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Mechanism of carbonate assimilation by intraplate basaltic magma and liquid immiscibility: example of Wangtian’e volcano (Changbaishan volcanic area, NE China)

Andreeva,

Dubinina,

Andreeva

et al. 2023

Front. Earth Sci.

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The balance of CO2 during abundant basaltic magma production is an important factor of volcanic hazards and climate. In particular, this can be explored based on CO2-rich mantle-derived magmas or carbonate assimilation by basaltic melts. To reconstruct the origin of Fe-rich carbonates hosted by Cenozoic basalts from Wangtian’e volcano (northeast China), we studied elemental compositions of melt, crystalline and fluid inclusions in magmatic minerals as well as the oxygen and carbon isotope compositions of the plagioclase and carbonates from basalts. The crystallization of basaltic magmas occurred in shallow chamber (∼4 km) at temperatures of 1,180°C–1,200°C and a pressure of 0.1 ± 0.01 GPa. Stable Fe-rich carbonates occur in the Wangtian’e tholeiite basalts as groundmass minerals, crystalline inclusions in plagioclase and globules in melt inclusions, which suggests that they crystallized from a ferrocarbonate melt. The values of δ18О and δ13С in the minerals analyzed by laser fluorination method are in line with the sedimentary source of Fe-rich carbonates, indicating assimilation and partial decomposition of carbonate phases. The parent ferrocarbonate melt could be produced during interactions between the basaltic magma and the crustal marbles. The phase diagram and thermodynamic calculations show that the ferrocarbonate melt is stable at a temperature of 1,200°C and a pressure of 0.1 GPa. Our thermodynamic calculations show that carbonate melt containing 73 wt% FeCO3, 24 wt% MgCO3 and 3 wt% CaCO3 is in thermodynamic equilibrium with silicate melt in agreement with our natural observations. The proposed mechanism is crustal carbonate sediment assimilation by the intraplate basaltic magma resulting in the melt immiscibility, production of the ferrocarbonate melt and the following Fe-rich carbonate mineral crystallization during magma residence and cooling.

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Section: Origin Of Ferrocarbonatesmentioning

confidence: 92%

Section: Analytical Techniquesmentioning

confidence: 99%

Section: Analytical Techniquesmentioning

confidence: 99%

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Mechanism of carbonate assimilation by intraplate basaltic magma and liquid immiscibility: example of Wangtian’e volcano (Changbaishan volcanic area, NE China)

Andreeva,

Dubinina,

Andreeva

et al. 2023

Front. Earth Sci.

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Development of Density Control Technology for Improving Medical Radiation Shielding Performance of Waste Marble Powder Mixture

Kim

2023

Coatings

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The marble used at construction sites creates a large amount of sludge after processing. Because waste marble has a high calcium oxide content, it is often used as a concrete mix building material. In this study, the use of waste sludge in the fabrication of radiation shields was investigated for medical shielding applications. A shielding sheet was produced by mixing a polymer and waste marble powder. A method for improving the density of the shielding sheet was developed to improve the shielding performance. To improve the density of the shielding sheet using the WMP mixture, the gap between particles was narrowed by making the WMP particles small and by mixing in a material with a proven shielding effect, such as bismuth oxide. In addition, a stirring defoaming process was used to reduce the voids between particles, and we presented a method to control the density by processing the WMP at a high temperature of 1200 °C. The experimental results revealed that the waste marble powder exhibited the highest shielding effect when mixed with radiation shielding materials such as bismuth oxide. The reduction of voids and the size of the particles used in preparing the shielding sheet proved to be effective in reducing the gap between the particles, resulting in an improvement of shielding of approximately 15% to 20%. The investigated shielding material based on waste marble powder was shown to be effective in shielding low-dose radiation.

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Hydrothermal Alteration and Its Superimposed Enrichment for Qianjiadian Tabular-Type Uranium Deposit in Southwestern Songliao Basin

et al. 2021

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The evolution characteristics of hydrothermal activity and superimposed uranium mineralization in the Qianjiadian ore field in southwestern Songliao Basin are still controversial and lack direct evidence. In this comprehensive study, a detailed identification of dolerite and hydrothermally altered un-mineralized sandstone and sandstone-hosted ore in the Yaojia Formation have been performed through the use of scanning electron microscopy observation, electron probe, carbon-oxygen-sulfur isotope, and fluid inclusion analyses. The results show that the hydrothermal fluid derived from the intermediate-basic magma intrusion is a low-temperature reducing alkaline fluid and rich in CO2, Si, Zr, Ti, Fe, Mg, Mn, and Ca, producing different types of altered mineral assemblages in the rocks, including carbonation, pyritization, sphalerite mineralization, clausthalite mineralization, silicification, and biotitization. Specifically, the carbonate minerals in sandstone are mixed products of deep hydrothermal fluid and meteoric water, with carbon and oxygen isotopes ranging from −5.2‰ to −1.7‰ and −20.4‰ to −11.1‰, respectively. Carbon source of the carbonate minerals in dolerite is mainly inorganic carbon produced at the late stage of intermediate-basic magma evolution, with carbon and oxygen isotopes from −16.1‰ to −7.2‰ and −18.2‰ to −14.5‰, respectively. Various carbonate minerals in the rocks may have been precipitated by the hydrothermal fluid after the magmatic stage, due to the change of its CO2 fugacity, temperature, and cation concentration during the long-term evolution stage. A series of carbonate minerals were generated as calcite, dolomite, ankerite, ferromanganese dolomite, and dawsonite. The precipitation processes and different types of carbonate mineral mixtures identified in this study mainly occur as parallel, gradual transition, interlacing, or inclusion metasomatism in the same vein body, without obvious mineralogical and petrologic characteristics of penetrating relationship. Homogenization temperature of fluid inclusions in calcite is high, in the range of 203–234 °C, with a low salinity of 0.71–4.34% NaCl, and the data range is relatively concentrated. Homogenization temperature of fluid inclusions in ankerite is usually low, ranging from 100 °C to 232 °C, with a high salinity of 4.18–9.98% NaCl. The precipitation processes of carbonate minerals and the results of this study are basically in consistent. Overall, the sandstone-type uranium deposits have a temporal and genetic relationship with hydrothermal activities during Paleogene. (1) Hydrothermal activity was directly involved in uranium mineralization, result in dissolution and reprecipitation of earlier uranium minerals, forming uranium-bearing ankerite and complexes containing uranium, zirconium, silicon, and titanium. (2) Hydrothermal fluid activity provided reducing agent to promote hydrocarbon generation from pyrolysis of carbonaceous fragments and accelerate uranium precipitation rate. (3) Regional water stagnation prolongs reaction time, contributing to huge uranium enrichment. This study provides new petrologic, mineralogical, and geochemical evidence for multi-fluid coupled and superimposed mineralization of sandstone-hosted uranium deposits in the sedimentary basin.

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Influence of Host Marble Rocks on the Formation of Intrusive Alkaline Rocks and Carbonatites of Sangilen (E. Siberia, Russia)

Cited by 3 publications

References 30 publications

Mechanism of carbonate assimilation by intraplate basaltic magma and liquid immiscibility: example of Wangtian’e volcano (Changbaishan volcanic area, NE China)

Mechanism of carbonate assimilation by intraplate basaltic magma and liquid immiscibility: example of Wangtian’e volcano (Changbaishan volcanic area, NE China)

Development of Density Control Technology for Improving Medical Radiation Shielding Performance of Waste Marble Powder Mixture

Hydrothermal Alteration and Its Superimposed Enrichment for Qianjiadian Tabular-Type Uranium Deposit in Southwestern Songliao Basin

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