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Needle twins and right-angled twins in minerals: Comparison between experiment and theory
Needle twins right-angled twins Comparison theory
2012/4/1
Transformation twinning in minerals forms isolated twin walls, intersecting twin walls with corner junctions, and wedge-shaped twins as elements of hierarchical patterns. When cut perpendicular to the...
Sate and Location of Water Adsorbed on Clay Minerals: Consequences of the Hydration and Swelling-Shrinkage Phenomena
Clay Paste Fabric Hydration State and Location of Water Swelling and Shrinkage Mechanisms t-Curve
2011/12/8
Abstract: The application of the Frenkel-Halsey-Hill (FHH) formalism to the water desorption isotherms obtained for the whole range of the activity of water with the pressure membrane device (0.98 < a...
A systematic approach to general and structure-type formulas for minerals and other inorganic phases
systematic approach general structure-type formulas minerals inorganic phases
2012/3/30
During the preparation of the Mineral Group List Index of the Mineral Powder Diffrac-tion File, it was necessary to develop a consistent scheme for the representation of the structural formulas. Becau...
The Inorganic Crystal Structure Database (ICSD) was searched for Si-OH groups with ordered H positions leading to 31 structures with 46 Si-OH groups. The geometrical char-acteristics of these partly h...
The chemical composition of REE-Y-Th-U-rich accessory minerals in peraluminous granites of the Erzgebirge-Fichtelgebirge region, Germany, Part I: The monazite-(Ce)-brabantite solid solution series
chemical composition REE-Y-Th-U-rich accessory minerals peraluminous granites Erzgebirge-Fichtelgebirge region monazite-(Ce)-brabantite solid solution series
2012/3/31
eraluminous granites of the Erzgebirge-Fichtelgebirge, Germany, are hosts of various members of the monazite group of minerals that display an unprecedented compositional diversity. The Eibenstock S-t...
Si-Al ordering in leucite-group minerals and ion-exchanged analogues: An MAS NMR study
Si-Al leucite-group minerals ion-exchanged analogues MAS NMR study
2012/4/6
Twoseriesofleucitegroupmaterials,withK,Rb,andCsasextra-frameworkcations,havebeensynthesizedbyionexchangefromanaturalwell-orderedanalciteandanatural29 27disorderedleucite.Siand AlMASNMRdatafortheanalci...
An IR absorption calibration for water in minerals
IR absorption calibration water minerals
2012/4/6
UsingIRabsorptiondatafrompolarizedmeasurementsonsingle-crystalmineralswithstoichiometricwatercontents(intheformofHOorOHgroupsinthestructure),alinear
calibrationcurve(r 0.98)forwaterinmineralsisestabl...
New Minerals Names
New mineral names
2012/4/6
(averageof15gaveBi87.23,Cr1.35,O11.27,sum99.85wt%,corresponding36toBiCrO.ValencesofBiandCrweredetermined16.0060.99727byXPS.Themineraloccursascolumnartoacicularcrys-talsupto25 50m,andasirregulartospher...
Nomenclature of amphiboles: Report of the Subcommittee on Amphiboles of the International Mineralogical Association, Commission on New Minerals and Mineral Names
amphibolenomenclature crossite dannemorite tirodite
2012/4/6
TheInternationalMineralogicalAssociation!ˉsapprovedamphibolenomenclaturehasbeenrevisedinordertosimplifyitmakeitmoreconsistentwith divisionsgenerally at50%,defineprefixesandmodifiersmoreprecisely,andin...
Third-generation synchrotron x-ray diffraction of 6-mm crystal of raite, 'Na3Mn3Ti0.25Si8O20(OH)2z10H2O, opens up new chemistry and physics of low-temperature minerals
Third-generation synchrotron x-ray diffraction low-temperature minerals chemistry and physics
2011/11/11
The crystal structure of raite was solved and refined from data collected at Beamline Insertion Device 13 at the European Synchrotron Radiation Facility, using a 3 3 3 3 65 mm single crystal. The refi...
Solid solution in the celadonite family:The new minerals ferroceladonite, K2Fe2+2Fe3+2Si8O20(OH)4,and ferroaluminoceladonite, K2Fe2+2Al2Si8O20(OH)4
Solid solution celadonite family new minerals ferroceladonite K2Fe2+2Fe3+2Si8O20(OH)4 ferroaluminoceladonite K2Fe2+2Al2Si8O20(OH)4
2012/4/5
Celadonite-familymicamineralsoccurringintheTriassicGavenwoodTuffs,Murihiku
Supergroup,HokonuiHills,Southland,NewZealand,havebeenanalyzedbyXRD,TEM,
AEM,andEMPA.Packetsafewunitcellstoseveralhundrednan...
Refined Relationships between Chemical Composition of Dioctahedral Fine-Grained Micaceous Minerals and Their Infrared Spectra within the OH Stretching Region. Part II: The Main Factors Affecting OH Vibrations and Quantitative Analysis
Cation Mass Cation Valency IR Spectra OH Stretching Frequencies Quantitative Analysis
2011/12/9
Abstract: A new model for the interpretation of dioctahedral mica infrared (IR) spectra in the OH stretching vibration region is proposed. It is based on the analysis of the main factors responsible f...
Refined Relationships between Chemical Composition of Dioctahedral Fine-Grained Mica Minerals and Their Infrared Spectra within the OH Stretching Region. Part I: Identification of the OH Stretching Bands
Celadonite Glauconite Illite IR Spectra Leucophyllite OH Stretching Frequency
2011/12/9
Abstract: A large and representative collection of clay-size dioctahedral mica minerals differing in their chemical compositions has been studied by infrared (IR) spectroscopy in the OH stretching vib...
Decomposition of Experimental X-ray Diffraction Patterns (Profile Fitting): A Convenient Way to Study Clay Minerals
Clay Minerals Decomposition Mixed Layering Simulation X-ray Powder Diffraction
2011/12/9
Abstract: This paper thoroughly describes the decomposition procedure, using the example of DECOMPXR (Lanson 1990). The steps of the decomposition procedure are: 1) preliminary data processing; 2) dec...
Theory of displacive phase transitions in minerals
Theory of displacive phase transitions minerals
2012/4/1
Alattice-dynamicaltreatmentofdisplacivephasetransitionsleadsnaturallytothesoft-
modemodel,inwhichthephase-transitionmechanisminvolvesaphononfrequencythat
fallstozeroatthetransitiontemperature.Thebas...