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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...
Calorimetric studies of the energetics of order-disorder in the system Mg1-xFexCa(CO3)2
Calorimetric studies energetics order-disorder system Mg1-xFexCa(CO3)2
2012/4/1
Calorimetric studies by Chai and Navrotsky (1996) on dolomite-ankerite energetics have beenextended by including two additional types of samples: a very disordered stoichiometric MgCa(CO3 2prepared fr...
Order-disorder process in the tetrahedral sites of albite
Order-disorder proces tetrahedral sites of albite
2012/3/31
The crystal structure of albite from Stintino, Sardinia, Italy, was refined at different degrees of
disorder to determine the (Si-Al) order-disorder process. Eight X-ray structure refinements were
p...
Gillulyite Tl2(As,Sb)8S13: Reinterpretation of the crystal structure and order-disorder phenomena
Tl2(As,Sb)8S13:crystal structure order-disorder phenomena slabs
2012/3/31
ThecrystalstructureofgillulyiteTl (As,Sb) S wasreinterpretedbasedontheaverage
structuredeterminedbyFoitetal.(1995).ItconsistsofalternatingPbS-likeslabscom-
prisedofAs-SpolyhedraandTl-bearingslabswit...
Near-infrared study of short-range disorder of OH and F in monoclinic amphiboles
Amphiboles OH-stretchingregion
2012/3/30
Amphibolesweresynthesizedalongthejoinstremolite¤C?uorotremolite,richterite¤C?u
rorichteriteandpotassic-richterite¤Cpotassic-?uororichteriteat75Cand1kbar P(H O).
2
Infraredspectraoftheamphiboleswere...
HRTEM and SAED investigations of polytypism, stacking disorder, crystal growth, and vacancies in chlorites from subgreenschist facies outcrops
Selected-area electron diffraction high-resolutio transmission electron microscopy
2012/3/30
Selected-areaelectrondiffraction(SAED)combinedwithexperimentalandcomputed
high-resolutiontransmissionelectronmicroscopy(HRTEM)imageswereusedtoinvesti-
gatepolytypism,stackingdisorder,mixedlayering,a...
Fe-Mg order-disorder in tremolite-actinolite-ferro-actinolite at ambient and high temperature
Fe-Mg order-disorder tremolite-actinolite-ferro-actinolite temperature
2012/3/31
The crystal structures and M-site populations of a series of unheated and heat-treated,near-binary members of the actinolite series were determined from single-crystal X-ray diffraction data. Small, s...
Stacking disorder and polytypism in enargite and luzonite
Stacking disorder polytypism enargite luzonite
2012/3/31
Microstructures of enargite and luzonite (Cu3AsS4) were studied using high-resolution transmission electron microscopy (HRTEM) and selected-area electron diffraction (SAED). Enargite and luzonite are ...
Disorder among network-modifier cations in silicate glasses: New constraints from triple-quantum 17O NMR
Disorder network-modifier cations silicate glasses New constraints triple-quantum 17O NMR
2012/4/6
Thestateoforderingamongnetwork-modi?ercationsinmoltensilicateshasapoten-tiallylargeeffectontheiroverallcon?gurationalentropy,onfreeenergiesofmixing,and
onviscosityanddiffusivity.Mostmodelsofthermodyn...
Exsolution and Al-Si disorder in alkali feldspars: Their analysis by infrared spectroscopy
Exsolution Al-Si disorder alkali feldspars analysis by infrared spectroscopy
2012/4/6
AnexperimentalmethodforthedeterminationofAb-OrexsolutionandAl-Siordering
inalkalifeldsparisdescribed.Powderinfraredspectroscopywasusedtomeasurespectra1
inthespectralrangebetween50and1500cm
usingabo...
Paramagnetic Fe3+: A Sensitive Probe for Disorder in Kaolinite
Disorder Electron Paramagnetic Resonance (EPR) Fe3+ Irradiation Kaolinite Point Defect
2011/12/22
Abstract: The Fe3+ substituted for Al3+ at the 2 octahedral positions is one of the most common impurities in the kaolinite structure detected by electron paramagnetic resonance (EPR). Evidence has be...
Multi-site order-disorder kinetics in crystalline solids: A generalized formulation
Multi-site order-disorder kinetics crystalline solids generalized formulation
2012/4/5
Manycrystallinesolidshavemultiplenonequivalentsitesamongwhichdifferentatoms
showsubstitutionallong-rangeorder-disorderphenomena.Theorder-disorderkineticsof
anatomamongany n nonequivalentsitesinacrys...
Thermodynamics of order-disorder in minerals: II. Symmetric formalism applied to solid solutions
Thermodynamics order-disorder minerals II. Symmetric formalism solutions
2012/4/9
The thermodynamics of order-disorder in mineral solid solutions are handled withsym-metric formalism, whereby the mineral is treated as a solid solution between an indepen-dent set of end-members with...
Thermodynamics of order-disorder in minerals: I. Symmetric formalism applied to minerals of fixed composition
Thermodynamics order-disorder minerals I. Symmetric formalism composition
2012/4/9
Thermodynamics of order-disorder in minerals maybe approached by treating the min-eral as a solid solution between an independent set of end-members withwhich the range of possible states of ordering ...
Order-disorder phenomena, which playa key role in the energetics, crystal chemistry, and physical properties of numerous solids, may be strongly affected by pressure. The effect of pressure on the sta...
