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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=56296
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Title
Structural changes in tsaregorodtsevite.
Authors
Sokolova, E.V.;Rybakov, V.B.;Pautov, L.A.;Pushcharovskii, D.Yu.
Reference
IC&volume=332&fpage=309&details=yes target=icsd_help>Doklady Akademii Nauk SSSR (1993)
332
, 309-312
Link
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Compound
C2 Al1 O12 Si5
- Carbon aluminium silicon oxide (2/1/5/12)
[
ABC2X6
] [
tI40
] [
k2 i g d
] [
]
Cell
8.908(1), 8.908, 8.925(1), 90., 90., 90.
I422 (97)
V=708.22
Remarks
R=0.047000 : D P =47-2499 :
Becomes cubic after heating to 1243 K, a=8.817
Heating product of tsaregorodtsevite (at 1143 K, loss of N H3),
Atom (site) Oxid.
x, y, z, B, Occupancy
Si1
(8i)
4
Si2
(4d)
4
Al1
(4d)
3
O1
(8g)
-2
O2
(16k)
-2
C1
(16k)
0.5
0.24
0
0.5
1.95
1
0
0.5
0.25
2.02
0.5
0
0.5
0.25
2.02
0.5
0.35
0.35
0
5.5(
1
0.35
-.01
0.35
4.89
1
0.07
0.10
0.08
4.3(
0.25
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