Results 31 to 40 of about 127 (124)

Permian sedimentary sequence containing analcimolite and authigenic aegirine from the Boskovice Basin (Bohemian Massif, Czechia)

The Depositional Record, Volume 12, Issue 5, November 2026.
The Permian freshwater lacustrine sedimentary sequence rich in analcime, with unusual authigenic aegirine and NaFe3+ clinopyroxene. Product of ashfall directly linked with fossil accumulation (Konzentrat‐Lagerstätte). Abstract The Early Permian freshwater lacustrine sedimentary sequence in the vicinity of Bačov (Czechia) is world‐famous for its rich ...
Jakub Jirásek, Dalibor Matýsek, Martin Kašing, Daniel Šimíček   +3 more
wiley   +1 more source

Tea Garden Lateritic Soil as a High-Temperature Desulfurization Sorbent: Effect of Oxygen on Regeneration Process

Journal of Chemistry, 2018
The lateritic soils collected from a tea garden were used to explore the regeneration process using different O2 contents for high-temperature desulfurization. The desulfurization and regeneration experiments were carried out using a fixed-bed reactor at
Tzu-Hsing Ko, Chen-Yao Chu
doaj   +1 more source

PROFILE DISTRIBUTION OF MINERALS IN TEXTURAL FRACTIONS OF DIFFERENT DIMENSIONS IN THE SOLONETS IN DRY STEPPE ZONE OF RUSSIA

Бюллетень Почвенного института им. В.В. Докучаева, 2018
Mineralogical composition of different texture fractions of Solonetz (Calcic Gypsic Endosalic Solonetz (Columnic Cutanic differentic) was studied.
E. B. Varlamov, M. P. Lebedeva, N. A. Churilin, A. E. Churilina   +3 more
doaj   +1 more source

NH4‐Smectites as Potential Precursors of Nitrogen Compounds Evolved During Analyses by the Sample Analysis at Mars (SAM) Instrument on the Curiosity Rover

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Ammonium (NH4+) in the interlayer space of phyllosilicates has been proposed as a potential but underexplored nitrogen reservoir on Mars. We synthesized ammonium‐exchanged smectites (montmorillonite SWy‐2 and nontronite NAu‐2) and analyzed them, both as pure phases and in mixtures containing five or 20 wt.% magnesium (Mg) perchlorate, under ...
S. Andrejkovičová, A. C. McAdam, J. C. Stern, M. Millan, R. Navarro‐González, C. A. Knudson, S. T. Wieman, E. B. Rampe, D. W. Ming, C. N. Achilles, S. S. Johnson, F. Rocha, C. A. Malespin, P. R. Mahaffy   +13 more
wiley   +1 more source

Comparison of dissolution of vermiculite in low concentration hydrochloric acid and sulfuric acid

四川大学学报. 自然科学版, 2023
As a trioctahedral layered silicate mineral, vermiculite is widely used in various fields due to its unique layered structure. Acid treatment of vermiculite can increase the specific surface area of vermiculite, change the number of layer charges and ...
ZHANG Yu, SUN Hong-Juan, PENG Tong-Jiang, LUO Li-Ming   +3 more
doaj  

Geochemical Modeling of Black Smoker Fluid Formation at the TAG Hydrothermal Vent Field

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Seafloor hydrothermal systems facilitate energy transport and chemical exchange between oceanic crust and seawater. The chemistry of hydrothermal fluids is attained through reactions with basaltic rock during fluid recharge, but the spatio‐temporal scales of fluid‐rock‐interaction at depth are difficult to constrain.
Jasper M. Engelmann, Alexander P. Gysi, Lars Rüpke   +2 more
wiley   +1 more source

Tunable Fabrication of 2D‐Layered Magnesium Nanosilicates With Hemostatic Properties

Small Science, Volume 6, Issue 9, September 2026.
Tunable 2D magnesium nanosilicates form bioactive protein coronas, support cellular internalization, and promote hemostatic activity. These nanoclays enable shear‐thinning gel formation and reduce clotting time and blood loss, highlighting their potential for wound‐management applications. Tunable fabrication of inorganic two‐dimensional (2D) nanoclays
Anna L. Keller, Kanwar Abhay Singh, Saptarshi Biswas, Kavita Kadu, Sarah E. Miller, Weijian Hua, Sridevi Conjeevaram, Vaaridhi Ramanuja, Shounak Roy, Samantha Foster, Changwoo Do, Wei‐Ren Chen, Yifei Jin, Akhilesh K. Gaharwar   +13 more
wiley   +1 more source

The Role of Chlorate‐Driven Oxidative Weathering in Shaping Clay Deposits on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Oxidized clays and the widespread Al/Si‐over‐Fe/Mg stratigraphy on Mars imply prolonged water‐rock interactions and efficient oxidative weathering despite the largely anoxic conditions of Early Mars when most deposits formed during the climate optimum.
Jiawei Wang, Nicole M. Fernandez
wiley   +1 more source

P–T Modelling Constrains the Depth of Emplacement of the Porto Azzurro Pluton and Implies Minor Exhumation Caused by the Zuccale Fault (Island of Elba, Italy)

Journal of Metamorphic Geology, Volume 44, Issue 6, Page 440-469, July 2026.
ABSTRACT Understanding the pressure of emplacement of granitic intrusions is crucial to understanding the exhumation history of plutons and constraining the tectonic setting of magma emplacement. However, P–T and geochronological constraints from exhumed plutons are often characterized by large uncertainties, especially in shallow crustal settings with
Samuele Papeschi, Marco Bonini, Matteo Lupi, Chiara Del Ventisette, Domenico Montanari   +4 more
wiley   +1 more source

Phlogopite Mica Under Acidic and Alkaline Conditions: Reactivity and Silicate Gel Formation

Journal of the American Ceramic Society, Volume 109, Issue 6, June 2026.
ABSTRACT Alkali‐activated materials (AAMs) produced using industrial residues offer a sustainable alternative to Portland cement, the production of which contributes nearly 8% of global CO2 emissions. However, commercial sodium silicate, commonly used as an activator, remains costly and energy‐intensive to produce, motivating the development of ...
Mahtab Akbarzadeh Khoei, Julson Tchio, Labeed Ahmad, Juho Antti Sirviö, Juho Yliniemi   +4 more
wiley   +1 more source