搜索结果: 1-15 共查到“凹凸棒石 transformation”相关记录58条 . 查询时间(0.157 秒)
The role of mineral surfaces in the preservation and transformation of organic carbon: meso- to nano– scale spatial complexity of organic matter forms in organic-rich shales
mineral surfaces preservation transformation organic carbon meso- to nano– scale spatial complexity organic matter forms organic-rich shales
2012/3/30
Sequestration of organic matter (OM) in sediments is a fundamental biogeochemical process that regulates planetary temperature, the flux of free oxygen to the atmosphere and oceans, and the distributi...
Palygorskite genesis through silicate transformation in Tunisian continental Eocene deposits
palygorskite illite Tunisia Eocene
2011/11/2
The mineralogical and geochemical characteristics of Eocene continental sedimentsin south central Tunisia (Chebket Bouloufa and Jebel Hamri) and in north central Tunisia (Jebel Lessouda and Jebel Rhe磑...
Structural Transformation of 2:1 Dioctahedral Layer Silicates during Dehydroxylation-Rehydroxylation Reactions
Cation Migration Celadonite Cis-Vacant Octahedra Dehydroxylation Glauconite Illite Rehydroxylation Smectites Structure Trans-Vacant Octahedra
2011/12/6
Abstract: The structural transformation of dioctahedral 2:1 layer silicates (illite, montmorillonite, glauconite, and celadonite) during a dehydoxylation-rehydroxylation process has been studied by X-...
The Kinetics of the Smectite to Illite Transformation in Cretaceous Bentonites, Cerro Negro, New Mexico
Bentonite Cerro Negro Cretaceous Illite I-S K-Ar Kinetics Microorganisms New Mexico Smectite
2011/12/7
Abstract: The thermal effects, as well as the survivability and origins of microorganisms in Cretaceous rocks, are evaluated from the timing and extent of the smectite to illite transformation in Cret...
New kinetic model for the nanocrystalline anatase-to-rutile transformation revealing rate dependence on number of particles
existing kinetic models new kinetic model transformation rate particles
2012/3/31
Existingkineticmodelsareunabletodescribepublishedexperimentaldataforthean-
atase-to-rutilephasetransformationinnanocrystallinesamples.Anewkineticmodelis
proposedthatcombinesinterfacenucleationatcert...
Hydrothermal Synthesis of Corrensite: A Study of the Transformation of Saponite to Corrensite
Chlorite Corrensite Hydrothermal Synthesis Randomly Interstratified Chlorite-Smectite Saponite X-ray Diffraction
2011/12/7
Abstract: Hydrothermal synthesis experiments were conducted to study the transition from smectite to corrensite. A mixture of oxides with the bulk composition of corrensite—Na0.4(Si6.4Al1.6)(Mg7..8Al1...
The Transformation of Illite to Muscovite in Pelitic Rocks: Constraints from X-ray Diffraction
Decomposition Diagenesis Illite Metamorphism
2011/12/2
Abstract: The boundary between diagenesis and metamorphism most likely involves the change of illite into mica. Observations of this change can be made using decomposed X-ray diffraction (XRD) spectra...
Solid State NMR Characterization of the Thermal Transformation of an Illite-Rich Clay
Illite Iron Paramagnetic Center Solid-State NMR Thermal Transformation
2011/12/9
Abstract: Lode, a dioctahedral illite-rich clay from Latvia belonging to the mica group of clay minerals, undergoes thermal transformation via a series of structurally disordered intermediate phases. ...
Coprecipitates of Cd, Cu, Pb and Zn in Iron Oxides: Solid Phase Transformation and Metal Solubility after Aging and Thermal Treatment
Aging Study Coprecipitation Electron Microprobe Analysis Ferrihydrite Transformation Metal Solubility Rate of Titration Thermal Treatment
2011/12/8
Abstract: Solid phase transformation and metal solubility were monitored after coprecipitation of Cd2+, Cu2+, Pb2+ and Zn2+ with Fe3+ to form ferrihydrite by titration to pH 6. The (co)precipitates we...
Transformation Mechanisms and Interstratification in Conversion of Smectite to Kaolinite: An HRTEM Study
HRTEM Interstratification Kaolinite Smectite Transformation Mechanisms
2011/12/8
Abstract: The transformation of smectite into kaolinite and kaolinite-smectite interstratification were studied in samples belonging to the Argiles Plastiques formation of the Paris basin, by high-res...
The effect of trace elements on the olivine-wadsleyite transformation
trace elements olivine-wadsleyite transformation
2012/4/1
Multianvil experiments were conducted at 1400 to 1600 8 C on olivine and peridotite starting compositions to determine the partitioning of Ti, Al, Cr, Ni, Ca, and Na between coexisting olivine and wad...
Mineralogical Transformation of Bioweathered Granitic Biotite, Studied by HRTEM: Evidence for a New Pathway in Lichen Activity
Back-scattered Electrons Biotite Bioweathering Granite High-Resolution Transmission Electron Microscopy (HRTEM) Lattice-Fringe Images Lichens Vermiculite
2011/12/8
Abstract: The question of whether clay minerals can be biogenically transformed as a result of lichen activity at the lichen-rock interface remains unresolved. We applied several microscopical and ana...
Diagenetic Transformation of Magnesite Pebbles and Cobbles to Sepiolite (Meerschaum) in the Miocene Eskisehir Lacustrine Basin, Turkey
Diagenesis Magnesite Replacement Sepiolite Turkey
2011/12/8
Abstract: Magnesite pebbles in Miocene lacustrine conglomerates in northwest Turkey have been partially to totally replaced by sepiolite. Only 5% of the magnesite pebbles have been converted to essent...
Characterization of mixed-layer illite-smectite from bentonites using microscopic, chemical and X-ray methods: Constraints on the smectite-to-illite transformation mechanism
Characterization mixed-layer illite-smectite microscopic X-ray methods smectite-to-illite transformation mechanism
2012/3/31
We studied mixed-layer illite-smectite (I/S) (,1 or 0.5 mm size fractions) in 28 diage-netic bentonite samples, Pliocene to Ordovician in age, from different locations in North America and Europe to i...
Light Scattering Study on Sol-Gel Transformation of SiO2 Colloid at Extremely High Concentrations
Light Scattering Study SiO2 Colloids Sol-gel Transformation
2011/12/8
Abstract: Ludox SiO2 sols with a reasonably uniform size of 12 nm and in the high concentration of 10 to 40 wt% were transformed to gels by lowering the pH. The process from sol to gel, followed by li...