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搜索结果: 1-7 共查到凹凸棒石 A 29Si MAS-NMR相关记录7条 . 查询时间(0.093 秒)
A new method to extract quantitative information from poorly resolved Si magic-angle spinning (MAS) nuclear magnetic resonance (NMR) spectra of natural mixed-layer illite-smectite (I-S) clays29Si i...
Pyrope-grossular solid solutions, (Mg,Ca) Al Si O , of composition Py Gr and Py Gr were3 2 3 12 85 15 75 25 synthesized at 1000, 1200, and 1400 ?C and 30 kbars in a piston-cylinder device. The synt...
29The SiMASNMRspectrumofarmenitefromWasenalp(Valais,Switzerland)indicates completeSi,Alordering.Thesamechemicalshifts(82.3,95.0,and101.8ppm)were alsomeasuredforarmenitefromRe!migny(Quebec,Canada),ho...
We report the compositional systematics of the 29 Si MAS NMR spectra of richterite,[A](Na,K,Rb)1(Na,Ca,Sr)2Mg5Si8O22 (OH,F)2; pargasite, NaCa2Mg4AlSi6Al2O2(OH)2; and fluor-edenite, NaCa2Mg5Si7AlO22F2....
We present 29SiMAS-NMR spectroscopic data for a series of synthetic feldspar samples along the join CaAI2Si20g-SrAI2Si20g, from which the composition dependence and cou- pling of order parameters de...
The structural phase transitions ofmonoclinic tridymite that occur at elevated temper-atures, as wellas the structure of the high-temperature modifications, have been studied by 29SiMASNMR. The sample...
AMonteCarlo method wasdeveloped to determine the distribution ofAland Sications from 29SiMASNMR data for framework aluminosilicates. The method wasused to an-alyze data obtained from Cs-exchanged leuc...

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