Results 51 to 60 of about 666 (181)

Potential of Soils Natural Sorbents for Environmental Decontamination From 137Cs

Land Degradation &Development, Volume 37, Issue 2, Page 779-789, 30 January 2026.
ABSTRACT This study addresses the existing research gap concerning the lack of integrated data on the role of in situ soil components in the long‐term fixation of 137Cs under natural, protected, and non‐agricultural conditions. The contamination of ecosystems by radioactive isotopes, particularly 137Cs, represents a considerable environmental hazard ...
Katarzyna Szarłowicz, Filip Jędrzejek, Marcin Stobiński, Michał Skiba   +3 more
wiley   +1 more source

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

Melanite-bearing nepheline syenite fragments and 40Ar/39Ar age of phlogopite megacrysts in conduit breccia from the Poços de Caldas Alkaline Massif (MG/SP), and implications

Brazilian Journal of Geology
: The Poços de Caldas Alkaline Massif, located in southeast Brazil, is composed of tinguaites, as well as phonolites and nepheline syenites (NeS), together with assorted pyroclastic rocks.
Silvio Roberto Farias Vlach, Horstpeter Herberto Gustavo Jose Ulbrich, Mabel Norma Costas Ulbrich, Paulo Marcos Vasconcelos   +3 more
doaj   +1 more source

Global Copper Deposit Dataset: A New Open‐Source Database for Advanced Data Analysis and Exploration Targeting

Geoscience Data Journal, Volume 13, Issue 1, January 2026.
We build a new, open‐source global copper deposit dataset (GCDD), facilitating AI‐driven data analysis for exploration targeting and improving our understanding of copper mineralizing systems and their mappable expressions. The GCDD hosts information about 1483 copper deposits worldwide, capturing key deposit attributes such as location, genetic type ...
Bin Wang, Renguang Zuo, Oliver P. Kreuzer   +2 more
wiley   +1 more source

East Meets West: The Trace of the Mesoproterozoic Kibaran Event in the Mantle Lithosphere Beneath Eastern Tanzania

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract We present elemental geochemistry and multiple isotopic systematics (Re‐Os, Lu‐Hf, Sm‐Nd and Sr) for mantle peridotite xenoliths from Lashaine in northern Tanzania. We use the data to examine how the major Proterozoic tectono‐thermal events that affected the crust of the western Tanzanian craton are imprinted on the lithospheric mantle in the ...
Sheng‐Hua Zhou, Qiao Shu, Sally A. Gibson, Hong‐Fu Zhang, Jing‐Jing Zhu, Hélène Legros, D. Graham Pearson   +6 more
wiley   +1 more source

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

Influence of Enhanced Rock Weathering of Nepheline‐Syenite Tailings on Major and Trace Elements Accumulation in Wheat

European Journal of Soil Science, Volume 77, Issue 1, January–February 2026.
Enhanced weathering of silicates consumes atmospheric CO2 and releases bio‐essential ions and trace elements that enrich the rhizosphere. This increases availability and uptake, influencing plant nutrient status and growth. ABSTRACT Soil nutrient depletion and quality are critical challenges facing agriculture and have been exacerbated by the long‐term
S. O. Apori, S. Flynn, D. A. C. Manning, G. Stewart, M. E. Wakefield, M. Edwards, L. Collins, K. J. Mclnnes   +7 more
wiley   +1 more source

Near-Infrared Spectroscopic Study of Biotite–Phlogopite (Mg# = 30~99): OH-Stretching Modes and Mg# Content Prediction Equation

Crystals
Biotite–phlogopite minerals are a complete Mg–Fe isomorphism series of phyllosilicates. A Fourier transform infrared spectroscopy (FTIR) and electron microprobe analysis (EMPA) were conducted on end-member phlogopite, Mg–biotite, and annite samples.
Zhentao Yang, Mingyue He, Shaokun Wu, Mei Yang, Bijie Peng   +4 more
doaj   +1 more source

Density of Synthetic Fluor-Phlogopite Glass

The Journal of the Society of Chemical Industry, Japan, 1967
合成雲母融液の過冷却度は熱処理温度, 時間とともに増加し, 最大に達したのち, ゆるやかに減少することは既に報告された。融液の電気伝導度, 粘度, 表面張力も融解温度とともに変化し, これは融液の構造の変化によるためと推定されたが, 測定精度が不十分であったため明確なことはいえなかった。本報は融液を急冷して得たガラスの密度を測定し, 融解温度による融液の構造の変化を明らかにしようとした。合成雲母結晶を1380～1470℃ 間で融解,一時間保持し,急冷したのち560℃,16時間焼きなましてひずみを除いた。試料ガラスの密度は浮沈法に準じた方法で測定した。1380～1400℃ 間では融解温度が高くなるに従い密度は減少するが,1410℃ 以上では密度は上昇する傾向が見られた ...
Yoshiro SUMIYOSHI, Yasuhisa TANAKA, Nobuhiko GOTO, Tokiti NODA   +3 more
openaire   +2 more sources

Inference of minerals at Redondão kimberlite crater, Parnaíba Basin, Brazil, based on interpretation of airborne gamma-ray spectrometry and ASTER data

Journal of the Geological Survey of Brazil
This work reports how minerals at Redondão kimberlite pipe may be inferred through integrated interpretation of airborne gamma-ray spectrometry data and multispectral images derived from Advanced Spaceborne Thermal Emission and Reflection Radiometer ...
Adolfo Silva
doaj   +1 more source