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中国地质大学科学技术发展院张磊（博士生）， 赵来时等GPMR国家重点实验室 Geochimica et Cosmochimica Acta, 2017. Raman spectral, elemental, crystallinity, and oxygen-isotope variations in conodont apatite during diagenesis
牙形；石磷；灰石；古海洋；古气候
2021/10/21
近日，中国地质大学地质过程与矿产资源国家重点实验室赵来时教授团队在国际著名期刊《Geochimica et Cosmochimica Acta》发表题为Raman spectral, elemental, crystallinity, and oxygen-isotope variations in conodont apatite during diagenesis（牙形石磷灰石的拉曼光谱、元素...
Kubler Illite “Crystallinity” Index of the Cretaceous Gyeongsang Basin, Korea: Implications for Basin Evolution
Gyeongsang Basin Illite Crystallinity (Kübler Index) Korea Low-Grade Metamorphism
2011/12/2
Abstract: Thermal maturity of the Lower Cretaceous Sindong and Hayang groups in the Gyeongsang Basin, Korea, was investigated using the Kübler illite “crystallinity” index (KI) which is based on the n...
Illite “Crystallinity” Revisited
Anchizone Coherent Diffracting Domain Thickness Expandable Layer Fundamental Particles Illite “Crystallinity” Illite-Smectite Interstratification
2011/12/2
Abstract: The Kübler Index (KI) is defined as the full width at half-maximum height (FWHM) of the 10-Å X-ray diffraction peak of illite-smectite interstratified (I-S) clay minerals. The only par...
Influence of Synthesis pH on Kaolinite “Crystallinity” and Surface Properties
Defect Density FTIR Hydrothermal Synthesis Kaolinite pH Surface Speciation XRD
2011/12/5
Abstract: Hydrothermal syntheses were performed at various pH values and temperatures to induce variability in kaolinite defect density. Temperature of synthesis ranged from 200 to 240°C, for 21 d. In...
Mineralogical Interference on Kaolinite Crystallinity Index Measurements
Kaolinite Crystallinity Index Mineralogical Interferences
2011/12/2
Abstract: This study examines the influence of minerals and amorphous phases associated with kaolin and kaolinitic rocks on kaolinite crystallinity indices (KCI) derived from X-ray diffraction (XRD) d...
Illite Crystallinity and Fluid Inclusion Analysis across a Paleozoic Disconformity in Central Korea
Disconformity Illite Crystallinity Korea Low-grade Metamorphism Paleozoic Strata Thermal History
2011/12/9
Abstract: Illite crystallinity and fluid inclusion techniques are used to understand the thermal histories of rocks on either side of the disconformity between the Lower and Upper Paleozoic strata in ...
Clay Mineralogy and Illite Crystallinity of the Atoka Formation, Arkoma Basin, and Frontal Ouachita Mountains
Anchimetamorphism Diagenesis Illite Illite crystallinity Polytype Provenance Vitrinite reflectance X-ray powder diffraction
2011/12/30
Clay mineralogy (including illite crystallinity) was studied in Pennsylvanian synorogenic sediments (Atoka Formation) in the subsurface of the Arkoma Basin and the adjacent Ouachita thrust belt. Vitri...
Properties of Goethites of Varying Crystallinity
Crystallinity Dissolution Goethite Hydrothermal treatment Iron Unit-cell dimension X-ray powder diffraction
2012/2/2
Goethites were synthesized from ferrihydrite in 0.7 M KOH between 4?and 90癈. As temperatures increased, the goethite crystals became larger and of less domainic character, and surface areas decreased ...
Mineralogy, Crystallinity, O18/O16, and D/H of Georgia Kaolins
Crystallinity Hardness Isotope Kaolin Origin Oxygen isotopes
2012/1/13
Mineralogy, kaolin crystallinity, Fe content, 銸18, and 銬 were determined for late Cretaceous 搒oft?and early Tertiary 揾ard?Georgia kaolins. The crystallinity of the <0.5-, 0.5?.0-, and 1.0?.0- 祄 size f...
Influence of Chloride on the Formation of Iron Oxides from Fe(II) Chloride. II. Effect of [Cl] on the Formation of Lepidocrocite and its Crystallinity
Chloride Green rust Iron oxides Lepidocrocite Oxidation X-ray powder diffraction
2012/2/3
Diffractograms of lepidocrocites formed from the oxidation of Fe(II) chloride solutions at pH 7 and 25∑C showed differential line broadening with (0k0) reflections being much sharper than (hk0) or (hk...
Characterization of the Particle Size and the Crystallinity of Certain Minerals by IR Spectrophotometry and Other Instrumental Methods—II. Investigations on Quartz and Feldspar
Crystallinity Feldspar Grinding Orthoclase Quartz
2012/2/10
Infrared spectra of two minerals; Urkut quartz (Hungary) and a Swedish feldspar, of different origin with different physical characteristics and crystallinity were studied. Samples were taken after ap...
Characterization of the Particle Size and the Crystallinity of Certain Minerals by Infrared Spectrophotometry and Other Instrumental Methods—I. Investigations on Clay Minerals
Particle Size Clay Minerals Crystallinity structural water kaolinites
2012/2/13
Effects of particle size, crystallinity and the amount of the structural water in kaolinites on their infrared spectra, were studied. The samples were ground in a vibrating ball-mill, and infrared and...
The Exothermic Reaction of Metakaolinite in the Presence of Mineralizers. Influence of Crystallinity
Exothermic Reaction Metakaolinite Mineralizers. Influence Crystallinity
2012/2/13
This paper presents further results concerning the nature of the exothermic reaction of meta-kaolinite near 950°C. In a previous work (Lemaitre et al., 1975), we proposed that the exothermic effect ha...
The Crystallinity of Minerals—A New Variable in Pedogenetic Processes: A Study of Goethite and Associated Silicates in Laterites
Crystallinity Minerals Pedogenetic Processes Goethite Associated Silicates
2012/2/15
The crystallinity of minerals in terms of crystallite size distribution and lattice perfection is quantified by means of statistical measures derived from X-ray line profiles (2 σ values). A low degre...
Evaluation of Crystallinity in Hydrated Ferric Oxides
Evaluation Crystallinity Hydrated Ferric Oxides
2012/2/15
The nature of freshly-precipitated and aged hydrated ferric oxides prepared by the addition of ferric chloride to KOH was investigated by the use of scanning and transmission electron microscopy, X-ra...