搜索结果: 121-135 共查到“理学 rich”相关记录141条 . 查询时间(0.015 秒)
Clintonite-1M: Crystal chemistry and its relationships to closely associated Al-rich phlogopites
Clintonite-1M:Crystal chemistry relationships associated Al-rich phlogopites
font style='font-size:12px;'>
2012/4/6
Crystal-structurere?nementswereperformedonclintonite-1M crystals[idealcompo-sitionCa (Mg Al) (SiAl )O (OH) ]fromskarnsofthePredazzo-MonzoniareaandAdamelloMassif(northernItaly)withtheaimofcharacterizin...
Direct oxygen measurements of Cr-rich spinel: Implications for spinel stoichiometry
Direct oxygen measurements Cr-rich spinel Implications spinel stoichiometry
font style='font-size:12px;'>
2012/4/6
Theavailability ofa synthetic multilayercrystal and accurately calibrated oxide and silicate standards makeit possible to usethe electron microprobefor precisea analysis ofspinel. Arequirement ofthe a...
A pressure-induced phase transition in MgSiO3-rich garnet revealed by Raman spectroscopy
pressure-induced phase transition MgSiO3-rich garnet Raman spectroscopy
font style='font-size:12px;'>
2012/4/6
Raman spectra oftwo synthetic, noncubic garnet samples rich in MgSi03component weremeasuredin adiamond-anvil cellto 200kbar atroom temperature. Sample1was pure MgSi03majorite;sample 2wasa solid soluti...
40Ar* diffusion in Fe-rich biotite
40Ar* diffusion Fe-rich biotite
font style='font-size:12px;'>
2012/4/6
Hydrothermal bulk-loss experiments employing radiogenic Ar(4°Ar*) wereperformed to determine whether 40 Ar*diffusivity in biotite increases withFecontent. Diffusion laws determined for intermediate an...
Crystal chemistry and petrologic significance of Fe3+-rich phlogopite from the Tapira carbonatite complex, Brazil
Crystal chemistry petrologic significance Fe3+-rich phlogopite Tapira carbonatite complex Brazil
font style='font-size:12px;'>
2012/4/6
This contribution deals withthe crystal chemistry ofphlogopite and Fe3+-rich phlogo-pite from the Tapira alkaline-carbonatite complex (Brazil) to assess the petrological sig-nificance and genetic cond...
Structure refinement of a natural K-rich diopside: The effect of K on the average structure
Structure refinement natural K-rich diopside K average structure
font style='font-size:12px;'>
2012/4/6
The crystal structure of the most K-rich natural pyroxene ever reported, a chromian diopside with1.5wt%K20,has been refined (diffractometer data, filtered MoKaradiation, by least-squares using XTAL to...
Cl-rich biotite and amphibole from Black Rock Forest, Cornwall, New York
Cl-rich biotite amphibole Black Rock Forest
font style='font-size:12px;'>
2012/4/5
Biotite and amphibole containing up to 4.6 and 5.1 wt%Cl,respectively, are found in gneisses from BlackRock Forest, located within the Hudson Highlands ofNewYork. The area wasmetamorphosed to granulit...
Fluid-absent melting of F-rich phlogopite + rutile + quartz
Fluid-absent F-rich phlogopite + rutile + quartz
font style='font-size:12px;'>
2012/4/5
Fluid-absent meltingis believed to bean important processin the generation ofmelts mthe lower crust and upper mantle.Breakdownofphlogopite makesH0 available and thus controlsthe conditions atwhichflui...
Magnesium-Rich Clays of the Meerschaum Mines in the Amboseli Basin, Tanzania and Kenya
Kerolite Meerschaum Mixed-layered kerolite/stevensite Oxygen isotope composition Sepiolite Stevensite
font style='font-size:12px;'>
2011/12/28
The Sinya Beds of the Amboseli Basin in Tanzania and Kenya consist largely of carbonate rocks and Mg-rich clays that are intensely deformed where exposed in and near former meerschaum mines. The carbo...
The Composition and Origin of Vanadium-Rich Clay Minerals in Colorado Plateau Jurassic Sandstones
Chlorite Diagenegis Illite Microprobe Roseoelite Sandstone SEM Vanadium
font style='font-size:12px;'>
2011/12/29
The composition and origin of vanadium-bearing clay minerals in the Jurassic (Morrison and Entrada Formations) sandstones of the Colorado Plateau are reassessed using microanalyses (microprobe and sca...
Boxwork Fabric of Halloysite-Rich Kaolin Formed by Weathering of Anorthosite in the Sancheong Area, Korea
Anorthosite Boxwork fabric Halloysite Kaolin Scanning electron microscopy Transmission electron microscopy
font style='font-size:12px;'>
2011/12/1
Abstract: Boxwork fabric in which numerous thin or thick halloysite wails are interconnected into a microscopically porous cellular pattern is widely developed in the halloysite-rich kaolin formed by ...
Fast and Slow Phosphate Sorption by Goethite-Rich Natural Materials
Adsorption Ferrihydrite Goethite Iron oxides Phosphate Porosity Silicate Sorption
font style='font-size:12px;'>
2011/11/30
Abstract: Although phosphate sorption by goethite and other less-abundant Fe oxides strongly influences the concentration of this anion in the soil solution and aquatic environments, relatively little...
K-Rich Mordenite from Late Miocene Rhyolitic Tuffs, Island of Samos, Greece
Hydrothermal alteration Mordenite Potassium Rhyolitic tuff Volcanic ash X-ray powder diffraction Zeolite
font style='font-size:12px;'>
2011/12/31
Mordenite occurs in hydrothermally altered rhyolitic volcanic rocks at the margin of a Late Miocene lake basin on the island of Samos, Greece. The mordenite was identified by its X-ray powder diffract...
Preparation and Characterization of Al-Rich Zn-Al Hydrotalcite-Like Compounds
Hydrotalcite Nuclear magnetic resonance Scanning-transmission electron microscopy Synthesis X-ray powder diffraction Zinc
font style='font-size:12px;'>
2012/1/6
Hydrotalcite-like compounds, described by the formula [Zn1-xAlx(OH)2][(CO3)x/2 · nH2O], were prepared by coprecipitation methods at 80°C and characterized by bulk chemical analysis, X-ray powder diffr...
Syntheses of Disordered and Al-rich Hydrotalcite-Like Compounds
Syntheses of Disordered Al-rich Hydrotalcite-Like Compounds
font style='font-size:12px;'>
2012/1/12
Hydrotalcite-like compounds, [Mg1−xAlx(OH)2]x+ [xX− · n H2O], where X− = ½ CO32- or OH−, were prepared by hydrothermal syntheses at PH2O = 100 MPa and T = 100°–350°C. St...