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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=26918 Help
TitleStructures of Brittle Micas.
AuthorsTakeuchi, Y.
ReferenceIC&volume=13&fpage=1&details=yes target=icsd_help>Clays and Clay Minerals (1966) 13, 1-25
Link XRef SCOPUS Google
CompoundH2 Al4 Ca1 O12 Si2 - [Margarite 2M1] Calcium dialuminium disilicodialuminate decaoxide dihydroxide [AB6X12] [mS84] [f9 e] []
Cell5.123, 8.886, 19.22099, 90., 95.5, 90.
C12/C1 (15) V=870.97
RemarksR=0.165000 : P =18-163 : M =Margarite 2M1 :
Calculated density unusual but tolerable.

Atom (site) Oxid. x, y, z, B, Occupancy
Al1(8f)3
O1(8f)-2
O2(8f)-2
O3(8f)-2
Si1(8f)4
Al2(8f)3
Si2(8f)4
Al3(8f)3
O4(8f)-2
O5(8f)-2
O6(8f)-2
Ca1(4e)2
H1(8f)1
0.250.0800.291
0.440.560.050.871.
0.950.440.051.251
0.380.250.051.121
0.460.920.140.530.5
0.460.920.140.530.5
0.450.250.140.710.5
0.450.250.140.710.5
0.350.080.170.41
0.270.780.161.461
0.270.390.170.451
00.090.251.141
01.

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