Results 71 to 80 of about 8,245 (240)

Goethite Nanorods: Synthesis and Investigation of the Size Effect on Their Orientation within a Magnetic Field by SAXS

Nanomaterials, 2020
Goethite is a naturally anisotropic, antiferromagnetic iron oxide. Following its atomic structure, crystals grow into a fine needle shape that has interesting properties in a magnetic field.
Stephan Hinrichs, Larissa Grossmann, Eike Clasen, Hannah Grotian genannt Klages, Dieter Skroblin, Christian Gollwitzer, Andreas Meyer, Birgit Hankiewicz   +7 more
doaj   +1 more source

Comparison of Soil Mineralogy From EMIT Imaging Spectroscopy and Ground‐Based Measurements in the Deserts of Southern California

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 12, 28 June 2026.
Abstract The highly variable spatial composition of desert soils remains a major source of uncertainty in estimates of dust radiative forcing. Existing soil mineralogy data sets used in climate models are limited by sparse ground observations and coarse spatial resolution.
Xuan Liu, Paul Ginoux, Carlos Pérez García‐Pando, Adolfo González‐Romero, Xavier Querol, Philip G. Brodrick, Amato Evan   +6 more
wiley   +1 more source

Mineralogy of the clay fraction of Alfisols in two slope curvatures: III - spatial variability

Revista Brasileira de Ciência do Solo, 2013
A good knowledge of the spatial distribution of clay minerals in the landscape facilitates the understanding of the influence of relief on the content and crystallographic attributes of soil minerals such as goethite, hematite, kaolinite and gibbsite ...
Livia Arantes Camargo, José Marques Júnior, Gener Tadeu Pereira   +2 more
doaj   +1 more source

Fluid‐Induced Magnetic Enhancement in Sandstone Friction Experiments: Implications for Coseismic Fault Temperature Estimates

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Constraining peak temperature during seismic slip is essential for quantifying earthquake energy budgets and fault weakening. Rock magnetic methods provide a sensitive means of estimating shear‐induced coseismic temperature rise; however, the role of fluids in friction‐induced magnetic alterations remains poorly constrained.
Qiang Fu, Mark J. Dekkers, Simo Spassov, Derya Gürer, Chien‐Cheng Hung, Job P. B. Arts, André R. Niemeijer   +6 more
wiley   +1 more source

Phyllosilicate-based adsorbents decorated with iron oxyhydroxides: Application for lead, chromates and selenites removal [PDF]

Science of Sintering
Expanded vermiculite (EVer) was acid activated and silanized in order to obtain suitable substrate’s surface for decoration with iron oxyhydroxides (IO).
Bugarčić Mladen, Veličković Zlate, Radovanović Željko, Milošević Milena, Mijatov Slavko, Stojanović Jovica, Marinković Aleksandar   +6 more
doaj   +1 more source

XV. Über Goethit [PDF]

Zeitschrift für Kristallographie - Crystalline Materials, 1910
n ...
Goldschmidt, V., Parsons, A. L.
openaire   +1 more source

Water Cationic Composition on Potassium Displacement in Tropical Soils

CLEAN – Soil, Air, Water, Volume 54, Issue 6, June 2026.
ABSTRACT This study aimed to evaluate the interplay between water hardness, sodium adsorption ratio (SAR), and electrical conductivity (EC); with tropical soil physical, chemical, and mineralogical characteristics on the displacement K+. The water quality treatments represented solutions suitable and not suitable for irrigation, with varying levels of ...
Miguel Angel Corea Alvarez, Michael Silveira Thebaldi, Marina Neves Merlo, Daniela Conceição de Jesus, Jaqueline dos Santos Soares, Elvis Márcio de Castro Lima, Adriano Valentim Diotto, Luiz Antonio Lima, Luiz Fernando Coutinho de Oliveira   +8 more
wiley   +1 more source

Red Pigments in the Bronze Age Burials in the North Caucasus: Complex Analysis for Identification of Pyroprocessing of Iron Minerals

Вестник Волгоградского государственного университета. Серия 4. История, регионоведение, международные отношения, 2018
Ochre is a natural pigment of yellow or red color, mainly consisting of iron minerals. Along with determining the origin of mineral dyes, one of the main problems of studying natural pigments in archaeology is identifying the origin of the so-called “red”
Pavel I. Kalinin, Viktor A. Trifonov, Natalya I. Shishlina, Andrey O. Alekseev   +3 more
doaj   +1 more source

Phosphate sorption by goethite and kaolinite‐goethite (k‐g) system as described by isotherms

Communications in Soil Science and Plant Analysis, 1998
Abstract Goethite and kaolinite are active sorbents in soils and sediments. Unfortunately measuring their phosphate sorption capacity is difficult, because of the relatively low proportion of these clay minerals in many natural mixtures and the difficulties involved in concentrating and separating them from accompanying minerals.
Ioannou, A., Dimirkou, A., Papadopoulos, P.   +2 more
openaire   +2 more sources

Quantification of the Eocene–Oligocene transition in the Zagros Foreland Basin: Palaeogeographic control on sequence architecture and tectonic signal preservation

The Depositional Record, Volume 12, Issue 3, June 2026.
New bio‐sequence framework for the Eocene–Oligocene transition in Zagros. Geochemical data validate basin depth control on SB1 vs. SB2 boundaries. SEM‐EDS analyses confirm subaerial exposure versus continuous deposition. Sensitivity analysis quantifies sub‐10% uncertainty in stratigraphic interpretations. Resolves the Pyrenean orogeny's variable impact
Sahar Rokni, Vahid Ahmadi, Seyed Hamid Vaziri, Ali Aghanabati, Pooria Kianoush   +4 more
wiley   +1 more source