搜索结果: 1-15 共查到“凹凸棒石 Calcite”相关记录15条 . 查询时间(0.173 秒)
A Macrocrystalline Attapulgite-Palygorski Occurrencein Calcite Veins
Macrocrystalline Attapulgite-Palygorski Occurrencein Calcite Veins
2011/10/19
Fibrousa ttapulgite-palygorskitwei,t h fibersg enerallym easurings everaml illimetersin length,i s found associatewd ith calcitei n hydrothermallyd epositedv eins.T he veinsr epresenftr acturef illing...
Sorption–desorption of cadmium in aqueous palygorskite, sepiolite,and calcite suspensions: Isotherm hysteresis
Cd Hysteretic adsorption Release Reversibility
2011/11/4
Sorption isotherms have been widely used to assess the heavy metal retention characteristics of soil particles. Desorption behavior of the retained metals, however, usually differ from that of sorptio...
Sorption of cadmium on palygorskite, sepiolite and calcite:Equilibria and organic ligand affected kinetics
Cd Kinetic Equilibrium Desferrioxamin B Citrate Acetate
2011/11/4
Quantity, affinity and rate of heavy metals retention by soil constituents can greatly influence the mobility and bioavailability of these metals
in soil environments. Equilibrium and kinetic studies...
A new explanation for the unusual critical behavior of calcite and sodium nitrate, NaNO3
A new explanation unusual critical behavior calcite sodium nitrate NaNO3
2012/4/1
The phase-transition behavior of both calcite and the isostructural compound NaNO have longbeen thought to be anomalous. In particular, the ? critical exponent for the orientational order-disor-der t...
The self-diffusion of Ca and the tracer diffusion of Mg in calcite have been measured experimen-Mg and Ca. Natural single crystals of calcite were coated with atally using isotopic tracers of gas at ...
XAFS study of the coordination and local relaxation around Co2+, Zn2+, Pb2+, and Ba2+ trace elements in calcite
XAFS coordination local relaxation trace elements calcite
2012/3/31
Analysis of divalent Co, Zn, Pb, and Ba XAFS spectra of synthetic and natural calcite samples
containing trace concentrations of these heavy metals confirms their substitution in the unique Ca
site ...
Effects of Mg-Fe2+ substitution in calcite-structure carbonates: Thermoelastic properties
Mg-Fe2+ substitution calcite-structure carbonates Thermoelastic properties
2012/3/31
In situ X-ray diffraction has been carried out on two siderite samples of different Fe contents simultaneously at high pressure and high temperature in a DIA-type, large-volume apparatus. Unit-cell vo...
Surface site-specific interactions of aspartate with calcite during dissolution: Implications for biomineralization
Surface site-specific aspartate with calcite dissolution biomineralization
2012/4/6
Calciteoccurswidelyasamineralcomponentintheexoskeletonsandtissuesofmarine
andfreshwaterinvertebrates.Matrixmacromoleculesinvolvedinregulatingthebiological
growthofcalciteintheseorganismsareknowntosh...
A calcite → aragonite-type phase transition in CdCO3
calcite → aragonite-type phase transition CdCO3
2012/4/5
Otavite(CdCO )recoveredfromexperimentsat P 170kbarand T 1000Ccon-tainedmaterialwiththearagonitestructure,indicatingthataphasetransitionoccurred.
Thelatticeparametersofthearagonite-typeCdCOare a 4.989...
The {l014} surfaces ofoptical quality calcite (Iceland spar) wereexamined in air using scanning force microscopy (SFM) immediately after cleavage and during the hours and days that followed. In the ab...
Reactions Between Clay Volatiles and Calcite Reinvestigated
Calcite Clay volatiles Mass spectra pH measurements Surface morphology
2011/12/31
Calcite crystals exposed to clay volatiles react with some components of these volatiles, giving rise to a variety of surface morphologies. F, Cl, and S in different proportions were detected by elect...
Crystallization of Iron Oxides on Calcite Surfaces in Static Systems
Calcite Crystallization Goethite Iron oxide Lepidocrocite Synthesis
2012/1/13
Iron salts react readily with calcite in oxidizing calcareous environments to produce solid phase Fe-oxides. These reactions represent important processes in aqueous, geologic, and pedogenic environme...
Reactions of Fe2+ and Fe3+ with Calcite
Calcite Dissolution Goethite Hydrolysis Iron Lepidocrocite Precipitation
2012/2/6
Ferrous or ferric perchlorate, 0.01 M, was reacted with calcite in stirred aqueous suspensions which were bubbled vigorously with an oxidizing purge gas. Two and three equivalents of CaCO3 were dissol...
A Macrocrystalline Attapulgite-Palygorskite Occurrencein Calcite Veins
Attapulgite-Palygorskite Calcite Veins
2011/11/4
Fibrousa ttapulgite-palygorskitwei,t h fibersg enerallym easurings everaml illimetersin length,i s found associatewd ith calcitei n hydrothermallyd epositedv eins.T he veinsr epresenftr acturef illing...
Low Temperature Hydrothermal Synthesis from Dolomite or Calcite, Quartz and Kaolinite
Low Temperature Hydrothermal Synthesis Dolomite Calcite Kaolinite
2012/2/20
Dolomite or calcite, quartz and kaolinite in various proportions were reacted at 250–300°C temperatures and pressures up to 90 bars in a hydrous environment. Reactions which approached completion prod...