Results 51 to 60 of about 127 (124)

Clays for Low‐Carbon Cements: Overview, Progress, and Challenges

Global Challenges, Volume 10, Issue 1, January 2026.
This review provides a critical overview of recent developments of activated clays to function as artificial pozzolans. After a thorough description of the clays that yield good pozzolanic performances, selected examples are given on thermal and mechanical activations. Chiefly, general correlations are extracted from reported data despite its scattered
Imane Koufany, Isabel Santacruz, Angeles G. De la Torre, María D. Rodríguez‐Ruiz, Miguel A. G. Aranda   +4 more
wiley   +1 more source

High-pressure behaviour and elastic constants of 1M and 2M₁ polytypes of phlogopite KMg₃Si₃AlO₁₀(OH)₂ [PDF]

Solid Earth
In the present work, the elastic properties of both 1M and 2M1 phlogopite polytypes, KMg3Si3AlO10(OH)2 (monoclinic crystal system) were investigated from PV equation of state fitting and by analysis of the fourth-rank elastic tensor.
G. Ulian, F. Ranellucci, G. Valdrè
doaj   +1 more source

Vanadium occupation and its leachability differences in trioctahedral and dioctahedral mica

RSC Advances, 2019
Vanadium in black shale prefers to locate in the octahedron of mica and can be more easily released from trioctahedral mica than dioctahedral mica.
Qiushi Zheng, Yimin Zhang, Nannan Xue, Tao Liu, Jing Huang   +4 more
openaire   +3 more sources

Ferromagnesian Clay Diversity Across Mars' Crustal Dichotomy: A Window Into Early Aqueous Environments

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Extensive research over the past two decades has shown that early Mars likely had a warmer, wetter climate with widespread water activity. Ferromagnesian (Fe,Mg‐rich) clay deposits are compelling markers of these ancient environments, helping reconstruct Mars' hydrologic evolution, assess past habitability, and guide future exploration.
Jeremy Brossier, Francesca Altieri, Maria Cristina De Sanctis, Alessandro Frigeri, Marco Ferrari, Simone De Angelis, Enrico Bruschini, Monica Rasmussen, Janko Trisic Ponce   +8 more
wiley   +1 more source

Preliminary Spectroscopic Observations of Marble-Hosted Rubies, Marginal Host Marbles, and Transition Zones Between Marbles and Rubies on Samples from Afghanistan, Myanmar, and Pakistan

Crystals
This study focusses on the spectroscopic observation of marbles, rubies and the transition zone between ruby and its hosted marble that may distinguish the origin of ruby.
Chen Fan, Yung-Chin Ding, Wing-Tak Lui
doaj   +1 more source

Petrography and mineral chemistry of the Eocene granodiorites in the Toveireh area (Southwest of Jandaq, Isfahan province)

Journal of Economic Geology, 2019
Introduction Granitoids are the most common igneous rocks that are found in all parts of the continental crust and play an important role in the formation and evolution of the Earth’s continental crust (Clarke, 1992).
Masumeh Sargazi, Ghodrat Torabi
doaj   +1 more source

Modelling Potassium Properties in East African Soils Using Infrared Spectroscopy

Applied and Environmental Soil Science, Volume 2026, Issue 1, 2026.
Potassium (K) is an essential plant nutrient and is often in short supply in the highly weathered soils of East Africa. The development of effective and sustainable fertilisation strategies could be helped by developing rapid and relatively cheap methods that provide initial assessments of inherent nutrient stocks and soil K behaviour.
A. M. Tye, K. Leeming, M. R. Cave, S. J. Kemp, T. Barlow, O. S. Humphrey, M. J. Watts, M. Pearson, J. Wragg, O. Osano, E. Weullow, E. Towett, K. D. Shepherd, Kalyani Sen   +13 more
wiley   +1 more source

Gênese de solos derivados de rochas ultramáficas serpentinizadas no sudoeste de Minas Gerais Genesis of soils formed from ultramafic serpentinized rocks in southwestern Minas Gerais (Brazil)

Revista Brasileira de Ciência do Solo, 2006
Os solos derivados de rochas serpentinizadas ou serpentinitos constituem um grupo especial de solos em toda superfície terrestre. De caráter ultramáfico, ou seja, rochas com mais de 70 % de minerais máficos (ferromagnesianos), os serpentinitos apresentam
Pablo Vidal-Torrado, Felipe Macias, Rosa Calvo, Sebastião Gomes de Carvalho, Alexandre Christófaro Silva   +4 more
doaj   +1 more source

Mineral Weathering Experiments for Terrestrial Planetary Analogs in a Continuous‐Flow Reactor

Geofluids, Volume 2026, Issue 1, 2026.
Understanding the groundwater environments for ancient Mars and other terrestrial bodies is of great interest for evaluating their habitability. Here, we experimentally tested simulated aqueous alterations of two Mars simulants (variants of MGS‐1) using a continuous‐flow packed bed reactor, reacting with three ionic simulated groundwater analog ...
Jessica M. Weber, Eduardo Martinez, Rachel Y. Sheppard, Laura E. Rodriguez, Aaron Celestian, Bronwyn L. Teece, Laura M. Barge, Pramita Mishra   +7 more
wiley   +1 more source

Respirable Asbestiform Serpentines in Outdoor and Indoor Air Near an Active Serpentinite Quarry

Indoor Air, Volume 2026, Issue 1, 2026.
The excavation and processing of serpentinites release asbestos and asbestiform fibers into outdoor and indoor air near quarries. In this study, concentrations of respirable asbestiform antigorite and chrysotile in indoor and outdoor air in a village near a serpentinite quarry and processing plants in southwestern Poland were investigated. Serpentinite‐
Andrzej Obmiński, Janusz Janeczek, Filip Chyliński, Arkadiusz Krzątała, Tomasz Krzykawski, Li Yang   +5 more
wiley   +1 more source