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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=77424 Help
TitleThe high-pressure crystal chemistry of low albite and the origin of the pressure dependency of Al-Si ordering.
AuthorsDowns, R.T.;Hazen, R.M.;Finger, L.W.
ReferenceIC&volume=79&fpage=104&details=yes target=icsd_help>American Mineralogist (1994) 79, 104-105
Link XRef SCOPUS Google
CompoundAl1 Na1 O8 Si3 - [Albite low] Sodium tecto-alumotrisilicate [ABC3X8] [aP26] [i13] []
Cell7.9567(21), 12.6784(10), 7.0897(37), 94.217(21), 116.992(24), 88.025(15)
C1- (2) V=635.56
RemarksR=0.065000 : P =2680 : M =Albite low :
Mean T-O: 1.730, 1.589, 1.622, 1.613

Atom (site) Oxid. x, y, z, B, Occupancy
Al1(4i)3
Si2(4i)4
Si3(4i)4
Si4(4i)4
Na1(4i)1
O1(4i)-2
O2(4i)-2
O3(4i)-2
O4(4i)-2
O5(4i)-2
O6(4i)-2
O7(4i)-2
O8(4i)-2
0.000.160.200.601
-.000.820.230.541
0.680.100.310.491
0.670.880.350.481
0.250.990.133.8(1
0.000.120.960.901
0.580.990.280.681
0.800.100.180.991
0.810.840.251.271
-.000.300.270.881
0.010.690.220.781
0.210.110.381.321
0.170.860.421.591
Atom (site) Oxid. Beta11, Beta22, Beta33, Beta12, Beta13, Beta23
Al1(4i)3
Si2(4i)4
Si3(4i)4
Si4(4i)4
Na1(4i)1
O1(4i)-2
O2(4i)-2
O3(4i)-2
O4(4i)-2
O5(4i)-2
O6(4i)-2
O7(4i)-2
O8(4i)-2
000000
000000
000000
000000
0.010.000.04-.000.01-.00
000000
000000
000000
000000
000000
000000
000000
000000

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