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CC=Collection Code: [AB2X4]=ANX Form: [cF56]=Pearson: [e d a]=Wyckoff Symbol: [Al2MgO4]=Structure Type:
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CC=71135 Help
TitlePowder neutron diffraction study of alkali-substituted cordierites with Mx Mg2 Al(4+x) Si(5-x) O18 (M= K, Cs; 0 < x <= 1) formula.
AuthorsThomas, P.;Mercurio, D.;Mercurio, J.P.;Frit, B.
ReferenceIC&volume=28&fpage=101&details=yes target=icsd_help>European Journal of Solid State Inorgani (1991) 28, 101-102
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CompoundAl5.01 Cs1.01 Mg2 O18 Si3.99 - [Cordierite high] Caesium magnesium cyclo-alumosilicate * [AB2C9X18] [hP60] [m l2 f e c] []
Cell9.8060(2), 9.8060(2), 9.4453(3), 90., 90., 120.
P6/MCC (192) V=786.56
RemarksR=0.048000 : D M =Cordierite high : N P =39-274 :
At least one temperature factor is implausible or meaningless but agrees with the value given in the paper.
The coordinates are those given in the paper but the atomic distances do not agree with those calculated during testing.The coordinates are probably correct.
Mean T-O: 1.731, 1.664
PDF 39-274, 80-2321

Atom (site) Oxid. x, y, z, B, Occupancy
Mg1(4c)2
Al1(6f)3
Si1(6f)4
Al2(12l)3
Si2(12l)4
O1(24m)-2
O2(12l)-2
Cs1(4e)1
0.330.660.250.131
0.50.50.250.200.57
0.50.50.250.200.43
0.370.2600.280.55
0.370.2600.280.45
0.480.340.140.621
0.220.2901.341
000.253.890.50

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