搜索结果: 1-15 共查到“地质学 alkali”相关记录24条 . 查询时间(0.057 秒)
Evaluation of a rapid, effective sample digestion method for trace element analysis of granitoid samples containing acid-resistant minerals: Alkali fusion after acid digestion
silicate digestion method trace element abundance silicate reference material alkali fusion
2017/4/10
Alkali fusion after acid digestion method (AFAD) was used for determination by ICP-MS of twenty-five trace elements
(Rb, Sr, Y, Zr, Nb, Cs, Ba, Hf, Pb, Th, U, and rare earth elements) in four silicat...
Possible reasons for anomalous fading in alkali feldspars used for luminescence dating of Quaternary deposits
luminescence dating IR-OSL feldspars anomalous fading ionic processes
2009/10/21
According to many publications, alkali feldspars are characterized by specific athermal (anomalous) fading of their thermoluminescence and optically-stimulated luminescence. This phenomenon is manifes...
Alkali Basalts From the Galatia Volcanic Complex, NW Central Anatolia, Turkey
NW Central Anatolia Galatia volcanic basalt alkali
2009/7/8
Alkali basalts occur as small lava flows associated with the andesitic lava flows and pyroclastics of Early to Middle Miocene age which are the main constituents of the Galatia volcanic complex. The n...
Alkali Basalts From the Galatia Volcanic Complex, NW Central Anatolia, Turkey
NW Central Anatolia Galatia volcanic basalt alkali
2009/7/8
Alkali basalts occur as small lava flows associated with the andesitic lava flows and pyroclastics of Early to Middle Miocene age which are the main constituents of the Galatia volcanic complex. The n...
Compressibility mechanisms of alkali feldspars: New data from reedmergnerite
New data pressue reedmergnerite
2012/3/30
Structuralandvolumecompressibilitydataforreedmergnerite,NaBSi O ,wereobtained3 8
bysingle-crystalX-raydiffractionatpressuresupto4.7GPa.Thebulkmoduluswas
determinedtobe69.8(5)GPawiththepressurederiva...
Rossmanite [](LiAl2)Al6(Si6O18)(BO3)3(OH)4, a new alkali-deficient tourmaline: Description and crystal structure
Rossmanite [](LiAl2)Al6(Si6O18)(BO3)3(OH)4 alkali-deficient tourmaline crystal structure
2012/4/1
Rossmanite is a new tourmaline species from near Rozˇna´, western Moravia, Czech Republic. It forms pale pink columnar crystals about 25 mm long and 5 mm thick, elon-gated along c with striation...
Exsolution and Al-Si disorder in alkali feldspars: Their analysis by infrared spectroscopy
Exsolution Al-Si disorder alkali feldspars analysis by infrared spectroscopy
2012/4/6
AnexperimentalmethodforthedeterminationofAb-OrexsolutionandAl-Siordering
inalkalifeldsparisdescribed.Powderinfraredspectroscopywasusedtomeasurespectra1
inthespectralrangebetween50and1500cm
usingabo...
Dislocation formation and albitization in alkali feldspars from the Shap granite
Dislocation formation albitization alkali feldspars Shap granite
2012/4/5
Orthoclase-richalkalifeldsparsintheLowerDevonianShapgranite,northwestEngland,
containtwogenerationsofalbite-richfeldspar.Thesehavepartiallyreplacedearlierexso-
lutionmicrotexturesconsistingofalbitel...
Phosphorus speciation changes across the glass transition in polymerized alkali silicate glasses and melts
Phosphorus speciation glass transition alkali silicate glasses melts
2012/4/9
In situ, high-temperature Raman spectroscopy of Na,O.9SiO, glasses and melts with and without 2 mol% P,05 has been conducted to 1491 K (near the liquidus temperature). In the temperature range from 29...
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...
Quantitative analysis of alkali feldspar minerals using Rietveld refinement of X-ray diffraction data
Quantitative analysis alkali feldspar minerals X-ray diffraction data
2012/4/6
Microcline +albite and albite + quartz standard mixtures werequantitatively analyzed using Rietveld refinement to investigate the reliability of the method. The method was also applied to the determin...
Time evolution of pericline twin domains in alkali feldspars: A computer simulation study
Time evolution pericline twin domains alkali feldspars computer simulation study
2012/4/6
Ala~ge-s~ale computer. simulation ofAl-Siordering and the corresponding development ofa twm mIcrostructure malkali feldspars is reported for the first time. In the simulation the o~der-disorder transi...
Channel occupancy in an alkali-poor beryl from Serra Branca (Goias, Brazil): Spectroscopic characterization
Channel occupancy alkali-poor beryl Serra Branca (Goias, Brazil) Spectroscopic characterization
2012/4/5
Spectroscopic (micro FfIR, Raman, MASNMR) and massspectroscopic techniques have been used to examine, on both single-crystal and powder samples, the behavior of H20 and C02 molecules in the structural...
Fluor-ferro-leakeite, NaNa2(Fe2+2Fe3+2Li)Si8O22 F2, a new alkali amphibole from the Canada Pinabete pluton, Questa, New Mexico, U.S.A
Fluor-ferro-leakeite NaNa2(Fe2+2Fe3+2Li)Si8O22 F2 alkali amphibole Canada Pinabete pluton
2012/4/5
Fluor-ferro-leakeite is anewamphibole speciesfrom the CanadaPinabetepluton,Ques-ta, NewMexico,U.S.A.;it occursin association withquartz, alkali feldspar, acmite, il-menite,and zircon. It forms asanhed...
Phonon-spectroscopy on alkali-feldspars: Phase transitions and solid solutions
Phonon-spectroscopy alkali-feldspars Phase transitions solid solutions
2012/4/5
Thephonon spectra ofIR-active vibrations in alkalifeldspars havebeensystematically investigated in the spectral range 50-2000 cm-I attemperatures between20and 900K. SampleswithhighdegreesofAl-Siorderd...