Article
Geochemistry & Geophysics
Tarun C. Khanna, Prachiti P. Kanakdande, Michael Bizimis, Kusumita Arora
Summary: In this study, the authors present a detailed analysis of the Deccan flood basalt province in terms of mineral chemistry, bulk-rock geochemistry, and isotopes. The results show significant variations in the geochemical and isotopic compositions of the basalts, indicating different sources. The study also reveals that the basalts were erupted in discreet batches rather than continuously, emphasizing the role of the subcontinental lithospheric mantle in the evolution of continental flood basalt provinces.
Article
Chemistry, Physical
Hakan Ciftci
Summary: This study developed a new method for the dry beneficiation of bentonites using a laboratory-scale dynamic separator and stirred media mill. The results showed that this method can effectively remove impurities from bentonites and obtain concentrated products with smaller particle sizes.
APPLIED CLAY SCIENCE
(2023)
Article
Geochemistry & Geophysics
Leonid Y. Aranovich, Alexey N. Pertsev, Andrey V. Girnis, Nikolay S. Bortnikov, Paula M. Antoshechkina
Summary: New data on the chemical composition of basalt glasses collected in the anomaly region of the Mid-Atlantic Ridge provide insight into the compositional variability and potential source materials. The study indicates that the glasses show a wide range of compositions and could originate from both depleted mantle and other source materials. The results suggest two alternative hypotheses, partial melting of continental crustal material and melt-rock interaction within off-axial gabbro structures, as potential mechanisms for the compositional diversity observed in the samples.
Article
Geochemistry & Geophysics
Yongqi Yu, Xin Qian, Azman A. Ghani, Yuzhi Zhang, Yuejun Wang
Summary: This paper presents new research on Middle-Late Triassic volcanism and granitoids in East Malaya, providing insights into the magmatic evolution and geodynamic processes of the Paleotethyan Ocean in Southeast Asia. The study suggests that these volcanic rocks and granites were formed in a localized extensional setting in response to the Paleotethyan slab breakoff, with the primary melting source being Proterozoic crustal rocks with a juvenile middle-lower crustal component.
Article
Chemistry, Physical
Nadia Boceiri, Abderraouf Boudahri, Ghizlene Benlazaar, Anes M. Lazzaz, Lahcen Benmahdi, Lala Setti Belaroui
Summary: In this study, two new clay-Schiff base materials were synthesized and their antibacterial activity was enhanced by functionalizing montmorillonite and palygorskite. The results showed moderate antibacterial activity against gram positive and gram negative bacteria for these modified materials.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Hassan Majiya, Francis Clegg, Chris Sammon
Summary: This study investigated the efficiency of mixing bentonite with chitosan via different preparation methods, and examined the ability of different forms of the mixture to remove Pb(II) ions from solution.
APPLIED CLAY SCIENCE
(2023)
Article
Geochemistry & Geophysics
Ivan D. Novoselov, Yuri N. Palyanov, Yulia V. Bataleva
Summary: Experimental modeling was conducted to study the interaction between garnets and H2O-CO2 fluid, revealing the characteristics and trends in garnet compositions as well as the formation patterns of carbon and carbon-bearing phases. The experiments resulted in garnet recrystallization and the formation of new phases such as magnesian carbonate, coesite, kyanite, corundum-eskolaite solid solution, and silicate-carbonate melt. The redistribution of bivalent cations between recrystallized garnet, carbonate, and carbonate-silicate melt was observed, highlighting the important role of H2O-CO2 fluids in metasomatic alterations of garnets.
Article
Materials Science, Multidisciplinary
Jinxi Qiao, Ailiang Chen, Xueyi Guo, Dong Li, Junhong Lin
Summary: This paper investigates the extraction method of precious metals in spent automobile exhaust catalysts. It proposes the use of ferric chloride as an oxidant to efficiently leach palladium in a hydrochloric acid system, and further oxidize the leaching residue by hydrogen peroxide. The experimental results show that the comprehensive leaching ratios of platinum, palladium, and rhodium are relatively high.
Article
Geochemistry & Geophysics
Yin-Ce Ma, Xing-Wang Xu, Tao Hong, Wen-Kai Jin, Hang Li, Zhi-Quan Yang, Shan-Ke Liu, Kai Kang, Xue-Hai Wang, Lei Niu
Summary: The newly discovered Tashisayi Li deposit in Northwest China is located in the eastern part of the Tashisayi batholith. The study reveals the relationships among different Li-bearing phases in a Li-rich composite pegmatite-aplite dyke. Through dating and geochemical analyses, it is found that the pegmatites and granites in the area were emplaced during various periods from the Early Ordovician to Early Devonian and were controlled by tectonic interactions.
MINERALIUM DEPOSITA
(2023)
Article
Materials Science, Multidisciplinary
Weizhi Zeng, Xiangyu Hu, Yang Yan, Bingxin Chen, Yongming Chen, Chaobo Tang, Jianguang Yang
Summary: This paper studies the process of treating zinc leaching residue by cavitation and dissociation technology, and forms the control technology of zinc leaching residue monomer through process optimization tests. The optimal conditions for treatment are a reactor temperature of 80 degrees C, a gas flow of 6 x 10-5 kg L-1, a pulp concentration of 5 g L-1, and air as the gas phase input, achieving a sulfur recovery rate of 85.4%.
Article
Materials Science, Multidisciplinary
Sigrid Jacobs, Jan Rens
Summary: This study investigates the impact of soft ferromagnetic materials in permanent magnet-assisted synchronous machines and double-rotor single-stator axial flux machines. The study uses a parametric approach and considers a wide range of electric and magnetic material properties. The results demonstrate the changes in magnetization and losses of the soft magnetic material at different temperatures, as well as the influence of these changes on thermal properties.
Article
Mineralogy
William D. Birch, Chi Ma
Summary: This study describes the occurrence of Au-Hg-Ag phases found in a historical concentrate from Waratah Bay in Australia. Electron microprobe analysis and electron back-scattered diffraction were used to characterize these phases, and the results indicate that they are likely formed due to supergene alteration. The methods employed in this study can provide a better understanding and characterization of these phases in relation to the Au-Hg synthetic system.
MINERALOGICAL MAGAZINE
(2023)
Article
Chemistry, Physical
Liyun Guo, Haichang Zhang, Jing Hua, Danfeng Liu
Summary: A novel strategy using in situ solution emulsification was developed to prepare a latex composite incorporating sodium montmorillonite, addressing the issue of inferior mechanical properties of cis-1,4-polyisoprene latex. The resulting composite films showed stability and excellent performance, making them suitable for high-end medical applications.
CLAYS AND CLAY MINERALS
(2023)
Review
Materials Science, Multidisciplinary
Nnaemeka Stanislaus Nzeh, Patricia Abimbola Popoola, Abraham Adeleke, Samson Adeosun
Summary: The choice and application of physical beneficiation techniques for heavy minerals (HMs) depend on various factors such as mineralogy, composition, shape, particle size distribution, and physicochemical properties. The increasing demand for HM products in industries, especially in nuclear and power industries, has led to the need for their efficient recovery. However, challenges exist in the recovery and separation of HMs from associated impurities. This review focuses on exploring the applications of magnetic separation process in the beneficiation/recovery of HMs, aiming to improve mineral concentration efficiency and simplify the extraction processes involved.
Article
Materials Science, Multidisciplinary
Arman Zarebidaki, Soroosh Davoodi
Summary: This study successfully electroplated defect-free and eco-friendly Fe-P coatings with a P content of 13 wt% onto a St 12 steel substrate using an optimized acidic bath containing glycine as the complexing agent. The coating exhibited nodular features on the surface, and the interface between the coating and the substrate was perfect. The nanocrystalline microstructure of the coating and the presence of an amorphous iron phosphate hydrate superficial layer contributed to the enhanced corrosion resistance of the substrate.
Article
Materials Science, Multidisciplinary
Falih Alazzawi, Hossein Aghajani, Abbas Kianvash
Summary: In this study, a high entropy alloy layer was formed on the surface of Ti-6Al-4V alloy using the TIG cladding process to improve its surface properties. The optimal process parameters for high surface hardness were found to be a current of 50 A, a scanning speed of 0.8 mm/s, and an argon flow rate of 12 L/min. The cladding layers were composed of BCC and FCC and exhibited a dendritic and weave-like mixed structure.
Article
Chemistry, Physical
Ming Weng, Xiuhua Wang
Summary: The present study aimed to determine the Hansen solubility parameters (HSPs) of raw muscovite (RM) and investigate the solvent dispersion mechanisms of RM. It was found that the solubility of muscovite depends on the dispersion and polar forces of the solvent, and the low polarity of muscovite is due to hindered ion exchange on the surface. The results of this study have important implications for understanding the interfacial phenomena of muscovite.
CLAYS AND CLAY MINERALS
(2023)
Article
Materials Science, Multidisciplinary
Yang Sun, Yiyue Chen, Chunyao Lan, You Tan, Lin Zhang, Bowen Dong, Song Lan
Summary: Fe-6.5 wt.% Si nanocrystalline alloys with good magnetic softness were prepared by mechanical alloying via a high-energy ball mill. The alloying process results in the formation of a single solid-solution phase with a grain size of about 10 nm. Ball-milling effectively reduces the particle size of the alloy powders and controls the particle size distribution. The Fe-Si alloy powders show good magnetic softness, with a saturation magnetization of about 198 Am-2/kg and coercivity of about 20 A/m.
Article
Chemistry, Physical
M. Osacky, Y. Bai, P. Uhlik, H. Palkova, M. Caplovicova
Summary: This study characterizes the mineralogical and physico-chemical properties of different technological types of K-bentonites from the Dolna Ves deposit. The results show variations in the illite-smectite content and nature among the different types, with implications for their potential applications.
CLAYS AND CLAY MINERALS
(2023)
Article
Materials Science, Multidisciplinary
Yanshaozuo Zhu, Xixun Shen, Qian Chen, Qunjie Xu
Summary: A composite passive film containing silicate and phosphate was formed on zinc through a composite passivation process. The study revealed that the composite passive film exhibited a cyclic film-forming process, promoting the growth and uniformity of the film. Compared to pure silicate passive film, the composite passive film demonstrated better corrosion resistance.
