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*data for ICSD #30285
Coll Code 30285
Rec Date 1980/01/01
Mod Date 1998/06/26
Chem Name Aluminium Silicate Hydroxide *
Structured Al2 Si2 O5 (O H)4
Sum H4 Al2 O9 Si2
ANX A2B2X9
Min Name Kaolinite 2M
D(calc) 2.61
Title The Crystal Structure of Kaolinite
Author(s) Gruner, J.W.
Reference Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie (-144,1977)
(1932), 83, 75-88
Unit Cell 5.148 8.92 14.535 90. 100.2 90.
Vol 656.9
Z 4
Space Group C 1 c 1
SG Number 9
Cryst Sys monoclinic
Pearson mS68
Wyckoff a13
Red Cell C 5.148 5.149 14.535 84.921 79.799 60.009 328.45
Trans Red 1.000 0.000 0.000 / 0.500 0.500 0.000 / 1.000 0.000 1.000
Comments Given y-coordinates for layer shift B, for shift A: y=0,
1/3, -1/3, 1/3, -1/3, 1/3, 0, 1/2, -1/4, 1/4, -1/6, 0, 1/6
Compound with mineral name: Kaolinite 2M
The structure has been assigned a PDF number (calculated
powder diffraction data): 01-075-0938
Standard deviation missing in cell constants
X-ray diffraction (powder)
Unusual difference between calculated and measured density
No R value given in the paper.
At least one temperature factor missing in the paper.
Position of 16 Elements of H Are Undetermined.
Atom # OX SITE x y z SOF H
Al 1 +3 4 a 0.25 -.167 0 1. 0
Al 2 +3 4 a 0.25 0.167 0 1. 0
Si 1 +4 4 a 0.008 0.5 0.188 1. 0
Si 2 +4 4 a 0.008 0.167 0.188 1. 0
O 1 -2 4 a -.046 0.5 0.076 1. 0
O 2 -2 4 a -.046 0.167 0.076 1. 0
O 3 -2 4 a -.046 -.167 0.076 1. H1
O 4 -2 4 a 0.033 0.333 0.229 1. 0
O 5 -2 4 a 0.283 -.417 0.229 1. 0
O 6 -2 4 a 0.283 0.083 0.229 1. 0
O 7 -2 4 a 0.046 0 0.424 1. H1
O 8 -2 4 a -.454 0.167 0.424 1. H1
O 9 -2 4 a 0.046 0.333 0.424 1. H1
Std. Notes Transformation Method: Tidy
Multiple transformations possible, first one selected
TRANS -x,-y,-z origin .46700 0 .77100
Std. Cell 5.1480 8.9200 14.5350 90 100.200 90
Std. Vol. 656.9
Std. Z 4
Std. SG C1C1
Std. Atom
Atom # OX SITE x y z SOF
Al 1 +3 4 a .28300 .16700 .22900 1.
Al 2 +3 4 a .28300 .16700 .72900 1.
Si 1 +4 4 a .02500 .00000 .04100 1.
Si 2 +4 4 a .02500 .33300 .04100 1.
O 1 -2 4 a .07900 .00000 .15300 1.
O 2 -2 4 a .07900 .33300 .15300 1.
O 3 -2 4 a .57900 .16700 .15300 1.
O 4 -2 4 a .00000 .16700 .00000 1.
O 5 -2 4 a .25000 .41700 .00000 1.
O 6 -2 4 a .25000 .08300 .50000 1.
O 7 -2 4 a .48700 .00000 .30500 1.
O 8 -2 4 a .48700 .66700 .30500 1.
O 9 -2 4 a .48700 .33300 .30500 1.
*end for ICSD #30285 |
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