搜索结果: 1-15 共查到“矿床学与矿相学 Layer”相关记录97条 . 查询时间(0.161 秒)
Formation of a sandy near-bed transport layer from a fine-grained bed under oscillatory flow
sandy near-bed transport layer fine-grained bed oscillatory flow
2014/4/8
Bed surface coarsening was found to be an important effect for the formation of ripples and the dynamics of the boundary layer above a predominantly silt-sized sediment bed (median particle size equal...
A HRTEM Study of Cronstedtite: Determination of Polytypes and Layer Polarity in Trioctahedral 1:1 Phyllosilicates
Cronstedtite HRTEM Layer Polarity Morphology Polytype Stacking Disorder Trioctahedral 1:1 Phyllosilicates
2011/12/5
Abstract: It is shown that polytypes or stacking sequences of cronstedtite, an Fe-bearing trioctahedral 1:1 phyllosilicate, can be determined using near-atomic high-resolution transmission electron mi...
Perturbative Theory of Mica Polytypism. Role of the M2 Layer in the Formation of Inhomogeneous Polytypes
Crystal Growth Long-Period Polytypes Mica Polytypism
2011/12/2
Abstract: A new model is proposed to explain, within the framework of the theory of spiral growth of Frank, the formation on inhomogeneous mica polytypes. This model relates the interaction and cooper...
Phase Analysis of Clays Using an Expert System and Calculation Programs for X-Ray Diffraction by Two- and Three-Component Mixed-Layer Minerals
Clay Analysis Expert System Mixed-Layer Minerals Phase Analysis XRD
2011/12/2
Abstract: X-ray phase analysis of clays is difficult because these materials generally consist of a mixture of different phases, i.e., mixed-layer minerals, individual clay minerals (non mixed-layer),...
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-...
Transmission Electron Microscopy Study of Illitization in Pelites from the Iberian Range, Spain: Layer-by-Layer Replacement?
Analytical Electron Microscopy I-S Illite Illitization Process Polytypism Prograde Diagenesis Scanning Electron Microscopy Transmission Electron Microscopy
2011/12/6
Abstract: A sequence of interstratified illite-smectite (I-S) and illite in Paleozoic pelites and metapelites from the Iberian Range, Spain, was studied by X-ray diffraction (XRD), scanning electron m...
Effects of Exchange Cations and Layer-Charge Location on Cysteine Retention by Smectites
Cysteine CMS Source Clay SAz-1 FTIR Homoionic Smectites Layer Charge Thermal Analysis XRD
2011/12/7
Abstract: This study investigates the complexes formed between amino acids, which are the natural degradation products of organic matter, and smectites. Thus, the adsorption and desorption behavior of...
Layer Charge Influences on the Hydration of Expandable 2:1 Phyllosilicates
External Surface Hydration Hydration Number Layer Charge SAz-1 SHCa-1 Surface Area SWa-1 Swelling VTx-1
2011/12/7
Abstract: The objective of this study was to investigate the influence of layer charge on the hydration of Mg-saturated expandable 2:1 phyllosilicates. Water retained by 12 Mg-saturated clays at 54% r...
Surface Layer Types of Kaolinite: A High-Resolution Transmission Electron Microscope Study
2:1 Layer Clays HRTEM Kaolinite Pyrophyllite Smectite Surface Layer
2011/12/6
Abstract: High-resolution transmission electron microscopy (HRTEM) examinations have indicated that three types of surface layers may exist in natural kaolinite crystals. Type 1 has the expected 7-侌 s...
Application of an Internal Standard Technique by Transmission X-ray Diffraction to Assess Layer Charge of a Montmorillonite by Using the Alkylammonium Method
Alkylammonium Method Interlayer Cation Exchange Capacity Layer-Charge Determination Montmorillonite Silver Behenate XRD
2011/12/6
Abstract: Transmission X-ray diffraction (XRD) of C6–16 alkylammonium ion-exchanged montmorillonite SAz-1 with Ag-behenate as an internal standard provided accurate estimates of d(001) values of the a...
Layer-Charge Heterogeneity in Smectites of I-S Phases in Pelitic Sediments from the Molasse Basin, Austria
Alkylammonium Method Austria Charge Heterogeneity Illite-Smectite K-Fixation Molasse Basin
2011/12/8
Abstract: The purpose of this study was to characterize more fully the surface charge characteristics of the end-member smectite in illite-smectite (I-S) mixed-layer phases found previously in pelitic...
Hydroxy-Interlayers in Expansible Layer Silicates and Their Relation to Potassium Fixation
Hydroxyaluminum Hydroxyaluminosilicate Montmorillonite Potassium Fixation Vermiculite
2011/12/8
Abstract: Hydroxyaluminosilicate (HAS) and hydroxyaluminum (HyA) ionic solutions having final Al concentrations ranging from 3.74 to 4.00 mM; NaOH/Al molar ratios of 1.0, 2.0 and 2.5; and Si/Al molar ...
Oxygen Isotope Compositions of Mixed-Layer Serpentine-Chlorite and Illite-Smectite in the Tuscaloosa Formation (U.S. Gulf Coast): Implications for Pore Fluids and Mineralogic Reactions
Diagenesis Illite-Smectite Oxygen Isotopes Sandstone Serpentine-Chlorite Tuscaloosa Formation
2011/12/8
Abstract: Oxygen isotopic compositions were determined for coexisting mixed-layer serpentine-chlorite (Sp-Ch) and illite-smectite (I-S) from 5 Tuscaloosa Formation sandstone cores sampled between 1937...
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...
Substructure and superstructure of four-layer Ca-exchanged birnessite
Substructure superstructure four-layer Ca-exchanged birnessite
2012/3/30
Synthetic Ca-exchanged birnessite (CaBi) was studied by X-ray and selected-area elec-tron diffraction (XRD, SAED). The substructure of CaBi may be described with a four-layer monoclinic subcell with a...
