搜索结果: 1-12 共查到“地质学 Aluminosilicate”相关记录12条 . 查询时间(0.093 秒)
Comparison of conventional and garnet-aluminosilicate-quartz O isotope thermometry: Insights for mineral equilibration in metamorphic rocks
Comparison of conventional garnet-aluminosilicate-quartz O mineral equilibration metamorphic rocks
2012/4/1
Oxygen isotope thermometry based on fractionations among quartz, garnet, kyanite, silliman-
ite, and potassium feldspar in amphibolite to granulite facies schists and gneisses was compared to
thermo...
Experimental observations of the effects of bacteria on aluminosilicate weathering
observations bacteria aluminosilicate weathering
2012/4/1
Mineral dissolution experiments using batch cultures of soil and groundwater bacteria were monitored with solution chemistry and various microscopic techniques to determine the effects of these organi...
Iron Influence in the Aluminosilicate Zeolites Synthesis
Al Coordination Iron Influence Kaolin Zeolite Synthesis
2011/12/8
Abstract: The level of Fe impurities in 2 well-crystallized kaolinites was modified (by addition or chemical removal treatment) to analyze the Fe influence in the aluminosilicate zeolite synthesis.The...
Molar volumes of mixing of almandine-pyrope and almandine-spessartine garnets and the crystal chemistry and thermodynamic-mixing properties of the aluminosilicate garnets
Molar volumes almandine-pyrope almandine-spessartine garnets crystal chemistry thermodynamic-mixing properties aluminosilicate garnets
2012/4/5
Thealuminosilicategarnetbinariesalmandine-pyropeandalmandine-spessartinewerestudiedbypowderX-rayandFeMo!§ssbauermethods.Re?nementsoftheunit-cellcon
stantsalongthealmandine-pyropejoinshowthatthevolume...
Optimizing the electron microprobe analysis of hydrous alkali aluminosilicate glasses
Optimizing electron microprobe analysis hydrous alkali aluminosilicate glasses
2012/4/6
The time-dependent loss of NaKa X-ray intensity during electron-beam irradiation of hydrous alkali alumino silicate glasses is apparently moresignificant during the initial few seconds ofbeam exposure...
Ab initio calculations on aluminosilicate Q3 species: Implications for atomic structures of mineral surfaces and dissolution mechanisms of feldspars
Ab calculations aluminosilicate Q3 species Implications for atomic structures dissolution mechanisms of feldspars
2012/4/6
Molecularorbitalcalculations onvariousaluminosilicate Q3T-OHandbridging0spe-cieswereperformed to modelatomic structural changesonmineralsurfacesthat occuras
a function ofpH. Calculatedvibrational fre...
The phenomenon of low Al-Si ordering temperatures in aluminosilicate framework structures
phenomenon Al-Si ordering temperatures aluminosilicate framework structures
2012/4/5
The enthalpy ofordering ofAland Sibetween tetrahedral sites in framework structures is now known from several studies to bein the range 0.3-1.4 eVper two Al-O-Si linkages, depending on the structure a...
Four-membered rings in silica and aluminosilicate glasses
Four-membered rings silica aluminosilicate glasses
2012/4/5
Assignmentofthe peaksnear485em-I in vibrational spectra ofSi02-M7;:;Al02(where M=an alkali oralkaline earth element) glassesto v,(T-O-T) modesin four-membered
rings wastested withmolecularorbital cal...
Synthesis and Characterization of a Hollow Spherical Form of Monolayer Aluminosilicate
Allophane Aluminosilicate Halloysite Imogolite Infrared spectroscopy Nuclear magnetic resonance Synthesis Transmission electron microscopy
2011/11/28
Abstract: Hollow spherical particles of aluminosilicate having diameters of 80 to 100 Å and high electric charge were synthesized by heating solutions containing Si and Al concentrations of abou...
Hydrothermal Formation of a Kaolinite-Like Product from Noncrystalline Aluminosilicate Gels
Aluminosilicate Gel Infrared spectroscopy Kaolinite Synthesis X-ray powder diffraction
2012/2/8
Noncrystalline aluminosilicate gels with Al2O3/(Al2O3 + SiO2) weight ratios from 0.3 to 0.5 were reacted in 0.1 N KOH at temperatures varying from 125° to 175°C. The pH of the solutions dropped sharpl...
The Release of Aluminum from Aluminosilicate Minerals. II. Acid-Base Potentiometric Titrations
Aluminum Biotite Buffer Illite Kaolinite Mica Montmorillonite
2012/2/9
Acidified suspensions of Al-saturated kaolinite, montmorillonite, mica, illite, and biotite in 10−3 M NaNO3 were potentiometrically titrated with 0.1 N NaOH and 0.1 N HNO3 in succession in a CO2...
The Release of Aluminum from Aluminosilicate Minerals. I. Kinetics
Aluminum Biotite Illite Kaolinite Montmorillonite
2012/2/10
The rates of release of Al by M NH4NO3 (pH 3) from minerals saturated with Al ions at pH 3 suggest that Al ions migrated from the surface layers and the matrix cores of kaolinite, montmorillonite, ill...