Investigation of clay mineralogy in a temperate acidic soil of a forest using X-ray diffraction profile modeling: Beyond the HIS and HIV description

Geoderma ◽  
2015 ◽  
Vol 241-242 ◽  
pp. 75-86 ◽  
Author(s):  
Jean-Christophe Viennet ◽  
Fabien Hubert ◽  
Eric Ferrage ◽  
Emmanuel Tertre ◽  
Arnaud Legout ◽  
...  
Keyword(s):  
Clay Mineralogy ◽  
Acidic Soil ◽  
X Ray Diffraction ◽  
Diffraction Profile ◽  
X Ray ◽  
Profile Modeling

scholarly journals New Insights on the Distribution of Interlayer Water in Bi-Hydrated Smectite from X-ray Diffraction Profile Modeling of 00lReflections

2005 ◽  
Vol 17 (13) ◽  
pp. 3499-3512 ◽  
Author(s):  
Eric Ferrage ◽  
Bruno Lanson ◽  
Natalie Malikova ◽  
Alain Plançon ◽  
Boris A. Sakharov ◽  
...  
Keyword(s):  
X Ray Diffraction ◽  
Interlayer Water ◽  
Diffraction Profile ◽  
X Ray ◽  
Profile Modeling

Impact of swelling clays on the spalling decay of building limestones: insights from X-ray diffraction profile modeling

2014 ◽  
Vol 26 (5) ◽  
pp. 643-656 ◽  
Author(s):  
Jeremie Berthonneau ◽  
Olivier Grauby ◽  
Eric Ferrage ◽  
Jean-Marc Vallet ◽  
Philippe Bromblet ◽  
...  
Keyword(s):  
X Ray Diffraction ◽  
Diffraction Profile ◽  
X Ray ◽  
Swelling Clays ◽  
Profile Modeling

scholarly journals Hydration behavior by X-ray diffraction profile fitting of smectite-bearing minerals

2020 ◽  
Vol 205 ◽  
pp. 04009
Author(s):  
Ruarri J. Day-Stirrat ◽  
L. Taras Bryndzia
Keyword(s):  
Relative Humidity ◽  
Clay Mineralogy ◽  
Wellbore Stability ◽  
Natural Material ◽  
X Ray Diffraction ◽  
Geological Time ◽  
Diffraction Profile ◽  
X Ray ◽  
Profile Fitting ◽  
Term Creep

Clay mineral hydration and dehydration processes are reversible at temperatures <100 °C and strongly affect wellbore stability, fines migration, permeability, and dispersion of pore pressure. The hydration behavior of smectite-rich material as a function of relative humidity (activity of water, aw, controlled by salinity) and temperature was studied using in situ X-ray diffraction on a material retrieved from coring in the Gulf of Mexico. X-ray diffraction profile fitting was used to explore the competition for water between hydratable phases across a range of relative humidity, 2 % to 90 %, and temperature, 25°C to 95°C, conditions. X-ray diffraction profile fitting employed a modified multi-specimen approach in which proportions of minerals were modelled using Ca-exchanged preparations in air-dried and ethylene glycol solvated states. Across the range of hydration states, the mineral proportions and crystallographic parameters remained constant from the multi-specimen approach and only the number of water layers in hydratable phases varied. Quantitative clay mineralogy showed a natural material with a discrete smectite component and a mixed-layered illite-smectite, both capable of hydration/dehydration. Results of this study showed the discrete smectite component and the mixed-layered illite-smectite hydrated at different rates with discrete smectite up-taking more water at lower relative humidity than the mixed-layered illite-smectite. Over geological time this study highlights the non-static nature of smectite hydration with implications of long-term creep and permeability behavior.

scholarly journals Provenance and Sedimentary Context of Clay Mineralogy in an Evolving Forearc Basin, Upper Cretaceous-Paleogene and Eocene Mudstones, San Joaquin Valley, California

Minerals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 71
Author(s):  
Andrew Hurst ◽  
Michael Wilson ◽  
Antonio Grippa ◽  
Lyudmyla Wilson ◽  
Giuseppe Palladino ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Upper Cretaceous ◽  
Clay Fraction ◽  
Clay Mineralogy ◽  
Bulk Rock ◽  
X Ray Diffraction ◽  
Arc Volcanism ◽  
X Ray ◽  
Magmatic Arc ◽  
Tropical Weathering

Mudstone samples from the Moreno (Upper Cretaceous-Paleocene) and Kreyenhagen (Eocene) formations are analysed using X-ray diffraction (XRD) and X-ray fluorescence (XRF) to determine their mineralogy. Smectite (Reichweite R0) is the predominant phyllosilicate present, 48% to 71.7% bulk rock mineralogy (excluding carbonate cemented and highly bio siliceous samples) and 70% to 98% of the <2 μm clay fraction. Opal CT and less so cristobalite concentrations cause the main deviations from smectite dominance. Opal A is common only in the Upper Kreyenhagen. In the <2 μm fraction, the Moreno Fm is significantly more smectite-rich than the Kreyenhagen Fm. Smectite in the Moreno Fm was derived from the alteration of volcaniclastic debris from contemporaneous rhyolitic-dacitic magmatic arc volcanism. No tuff is preserved. Smectite in the Kreyenhagen Fm was derived from intense sub-tropical weathering of granitoid-dioritic terrane during the hypothermal period in the early to mid-Eocene; the derivation from local volcanism is unlikely. All samples had chemical indices of alteration (CIA) indicative of intense weathering of source terrane. Ferriferous enrichment and the occurrence of locally common kaolinite are contributory evidence for the intensity of weathering. Low concentration (max. 7.5%) of clinoptilolite in the Lower Kreyenhagen is possibly indicative of more open marine conditions than in the Upper Kreyenhagen. There is no evidence of volumetrically significant silicate diagenesis. The main diagenetic mineralisation is restricted to low-temperature silica phase transitions.

THE CLAY MINERALS IN SOME BRITISH COLUMBIA SUBSOILS

1962 ◽  
Vol 42 (2) ◽  
pp. 296-301 ◽  
Author(s):  
J. S. Clark ◽  
J. E. Brydon ◽  
H. J. Hortie
Keyword(s):  
British Columbia ◽  
Diffraction Analysis ◽  
Clay Minerals ◽  
Clay Mineralogy ◽  
X Ray Diffraction ◽  
The South ◽  
Parent Materials ◽  
X Ray ◽  
Northeastern Part ◽  
Montmorillonitic Clay

X-ray diffraction analysis was used to identify the clay minerals present in fourteen subsoil samples that were selected to represent some more important clay-bearing deposits in British Columbia. The clay mineralogy of the subsoils varied considerably but montmorillonitic clay minerals tended to predominate in the water-laid deposits of the south and illite in the soil parent materials of the Interior Plains region of the northeastern part of the Province.

X-Ray Diffraction Profile Analysis for Characterizing Isothermal Aging Behavior of M250 Grade Maraging Steel

2008 ◽  
Vol 39 (8) ◽  
pp. 1978-1984 ◽  
Author(s):  
S. Mahadevan ◽  
T. Jayakumar ◽  
B.P.C. Rao ◽  
Anish Kumar ◽  
K.V. Rajkumar ◽  
...  
Keyword(s):  
Maraging Steel ◽  
Isothermal Aging ◽  
Profile Analysis ◽  
X Ray Diffraction ◽  
Aging Behavior ◽  
Diffraction Profile ◽  
X Ray
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