搜索结果: 1-8 共查到“凹凸棒石 first”相关记录8条 . 查询时间(0.171 秒)
First Occurrence of a Stacking Sequence including (?0? 180? Rotations in Mg-Rich Annite
Annite Biotite HRTEM Mica Polytype-2O Polytypism Stacking Disorder
2011/12/8
Abstract: Transmission electron microscopy (TEM) observation shows narrow regions in a Ti-containing Mg-rich annite of composition (K0.90Na0.02)(Mg0.72Fe2+1.78Mn0.03Ti0.27Al0.05)(Si2.77Al1.23)O10(OH,F...
First principles calculations on the high-pressure behavior of magnesite
First principles calculations high-pressure behavior magnesite
2012/4/1
The equation of state and high pressure (>200 GPa) behavior of magnesite were investigated
using first principles pseudopotential calculations based upon density functional theory within the
general...
Wyartite: Crystallographic evidence for the first pentavalent-uranium mineral
Wyartite:Crystallographic evidence first pentavalent-uranium mineral
2012/4/1
Determination of the structure of wyartite provides the first evidence for a pentavalent-U mineral.
5+UO ) (CO )O (OH)(H O) , Z = 4, orthorhombic, a = 11.2706(8), bThe structure of wyartite, CaU
2 2...
Aliphatic hydrocarbons in structural channels of cordierite: A first evidence from polarized single-crystal IR-absorption spectroscopy
Aliphatic hydrocarbons channels of cordierite single-crystal IR-absorption spectroscopy
2012/3/31
Polarized IR-absorption spectra were measured on inclusion-free spots, 50 ?m in diameter of
(100)-, (010)-, and (001)-oriented single-crystal plates of orthorhombic cordierites extracted from
anatec...
Mineralogy of the Louvres Merovingian garnet cloisonn?jewelry: Origins of the gems of the first kings of France
Mineralogy Louvres Merovingian garnet cloisonn Origins
2012/3/31
Proton-particle induced X-ray emission (p-PIXE) analyses have been performed on cloisonne ?jewelry from a necropolis excavated in 1987 at Louvres (North Paris) that dates from the Early Middle Ages (f...
Crystal chemistry of forsterite: A first-principles study
Crystal chemistry forsterite first-principles study
2012/4/5
Wepresenta?rst-principlesstudy(localdensityapproximation)ofthestructuralprop-
ertiesofforsteriteunderpressure.Thishighlyanisotropicmagnesiumorthosilicateisthe
mostabundantphaseoftheEarth!flsupperman...
Fe Substitution for Al in Glauconite with Increasing Diagenesis in the First Wilcox Sandstone (Lower Eocene), Livingston Parish, Louisiana
Ankerite cement Diagenesis Glauconite Illite/smectite Iron Potassium
2011/11/30
Abstract: Glauconites in early ankerite concretions, ferroan calcite-cemented sandstones, and uncemented sandstones in the first Wilcox sandstone of the Lockhart Crossing field, Livingston Parish, Lou...
A First-Order Markov-Chain Model of Zeolite Crystallization
Crystallization Markov-chain model Rate constants Silica oligomers Zeolites
2012/1/6
A method using a finite, first-order Markov chain is presented to estimate rate constants for zeolite formation from experimental nuclear magnetic resonance (NMR) data on the abundance of different si...