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Relationship between geological structure and helium isotopes in deep groundwater from the Osaka Basin: Application to deep groundwater hydrology
helium isotopes noble gas groundwater hydrology Osaka basin
2017/8/10
The relationship between geological structure and helium isotopes is discussed for deep groundwaters from the Osaka sedimentary basin, southwest Japan, to understand dissolved He in groundwater for hy...
Synchrotron powder X-ray diffraction study of the structure and dehydration behavior of palygorskite
Palygorskite Rietveld synchrotron X-ray diffraction time-resolved
2011/11/7
Rietveld refinements using synchrotron powder X-ray diffraction data were used to study the crystal structure and dehydration behavior of pure monoclinic palygorskite samples from Korea and Alaska. Th...
On the structure of palygorskite by mid- and near-infrared spectroscopy
IR spectroscopy palygorskite NIR spectroscopy Fe-rich hormite hydration
2011/11/4
The OH-structural characteristics of an iron-rich palygorskite from Western Macedonia, Greece (Gr-1) and an aluminous palygorskite from Florida (PFl-1) were examined by combined Fourier-transform near...
Crystal structure refinement of palygorskite from neutron powder diffraction
palygorskite structure neutron powder refinement zeolitic water clay mineral
2011/11/4
Palygorskite is a Mg-rich fibrous clay, present in nature as a mixture of two intricately intertwined polymorphs –monoclinic (C2/m) and orthorhombic (Pbmn) –characterized by the presence of channels a...
Abstract: The relative growth rates of the three joint chains of silica tetrahedra and metal octahedra in the [100], [110] and [110] directions within the mica layer (referring to the 1M unit-cell) se...
Self-Organized Inorganic-Organic Hybrids Induced by Silylating Agents with Phyllosilicate-Like Structure and the Influence of the Adsorption of Cations
Adsorption Aminated Surface Complexes Ion-Exchange Modified Phyllosilicate
2011/12/6
Abstract: Two analogous inorganic-organic hybrids with a phyllosilicate-like structure SILMg1 and SILMg2, containing 3-aminopropyl- and N-propylethylenediaminetrimethoxysilane were synthesized through...
Structural Chemistry of Fe, Mn, and Ni in Synthetic Hematites as Determined by Extended X-Ray Absorption Fine Structure Spectroscopy
EXAFS Fe Oxides Hematite Metal Substitution Trace Elements XAS XRD
2011/12/6
Abstract: The incorporation of transition metals into hematite may limit the aqueous concentration and bioavailabity of several important nutrients and toxic heavy metals. Before predicting how hemati...
Refinement of the Crystal Structure of Cronstedtite-1T
Cronstedtite Layer Silicate Order-Disorder (OD) Polytypism X-ray Diffraction
2011/12/6
Abstract: The crystal structure of cronstedtite-1T was refined in space group P31m, using two crystals: a triangular tabular crystal from Herja, Romania and a conical crystal from Lostwithiel, Cornwal...
Destinezite (“Diadochite”), Fe2(PO4)(SO4)(OH).6H2O: Its Crystal Structure and Role as a Soil Mineral at Alum Cave Bluff, Tennessee
Crystal Structure Destinezite Diadochite Phosphate-Sulphate Soil Mineral
2011/12/2
Abstract: A new occurrence of destinezite (diadochite), ideally Fe2(PO4)(SO4)(OH)·6H2O, is described from Alum Cave Bluff, Great Smoky Mountains National Park, Tennessee, where it occurs in soil and i...
Bederite, a new pegmatite phosphate mineral from Nevados de Palermo, Argentina: Description and crystal structure
Bederite new pegmatite phosphate mineral Nevados de Palermo Argentina Description crystal structure
2012/4/1
Bederite, ideally Ca Mn Fe Mn (PO ) (H O) , orthorhombic, a = 12.559(2), b = 12.834(1), c= 11.714(2) ?, V = 1887.8(4) ?
, Z = 4, space group Pcab, is a new mineral from the El Pe?(R)AE
pegmatite, Ne...
Tobermorites: Their real structure and order-disorder (OD) character
Tobermorites real structure order-disorder character
2012/4/1
The real structures of clinotobermorite, tobermorite 9 ?, and tobermorite 11 ? were determined
through the application of OD approach, which allowed us to explain their peculiar disorder and
polytyp...
A new complex sheet of uranyl polyhedra in the structure of w鰈sendorfite
A new complex sheet uranyl polyhedra structure of w鰈sendorfite
2012/4/1
The structure of w?lsendorfite, Pb Ba [(UO ) O (OH) ](H O) , Z = 8, orthorhombic, a =6.16 0.36 2 14 19 4 2 12space group Cmcm, was solved by direct14.131(1), b = 13.885(1), c = 55.969(4) ?, V = 10,982...
Rietveld refinement of the crystallographic structure of human dental enamel apatites
Rietveld refinement crystallographic structure human dental enamel apatites
2012/4/1
Rietveld refinements using 12 sets of X-ray diffraction powder data from milligram samples of
human dental enamel provide detailed information about the structure and composition of enamel
apatite. ...
Crystal structures of two partially dehydrated chlorites: The "modified" chlorite structure
Crystal structures two partially dehydrated chlorites:The "modified" chlorite structure
2012/4/1
Chromian clinochlore-IIb-4 (triclinic) and IIb-2 (monoclinic) polytypes from the Day Book Body,
North Carolina, were heated to 650 ?C for 5 hours and air quenched. Single-crystal X-ray refinements
o...
Refinement of the Kaolinite Structure from Single-Crystal Synchrotron Data
Crystal Structure Diffuse Scattering H-Positions Kaolinite Microcrystal Single Crystal Refinement Synchrotron Radiation
2011/12/7
Abstract: The crystal structure of single crystals of kaolinite from Keokuk, Iowa, was refined using data measured at the microfocus X-ray beamline at the ESRE Grenoble, France (λ = 0.6883, T = room t...