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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=73440
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Title
Structure refinements of beryl by single-crystal neutron and X-ray diffraction.
Authors
Artioli, G.;Rinaldi, R.;Stahl, K.;Zanazzi, P.F.
Reference
IC&volume=78&fpage=762&details=yes target=icsd_help>American Mineralogist (1993)
78
, 762-768
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Compound
H0.96 Al1.97 Be3 Fe0.03 O18.48 Si6
-
[Beryl]
Beryllium iron aluminium cyclo-hexasilicate hydrate *
[
A4B6C12X37
] [
hP61
] [
m l2 f c a
] [
]
Cell
9.218(2), 9.218(2), 9.197(2), 90., 90., 120.
P6/MCC (192)
V=676.78
Remarks
R=0.022000 : M =Beryl : P =9-430 : T =295 : D
Atom (site) Oxid.
x, y, z, B, Occupancy
Si1
(12l)
4
Be1
(6f)
2
Al1
(4c)
3
Fe1
(4c)
3
O1
(12l)
-2
O2
(24m)
-2
O3
(2a)
-2
H1
(24m)
1
0.38
0.11
0
0.24
1
0.5
0
0.25
0.45
1
0.66
0.33
0.25
0.21
0.98
0.66
0.33
0.25
0.21
0.01
0.30
0.23
0
0.80
1
0.49
0.14
0.14
0.47
1
0
0
0.25
8.5(
0.48
0
0.08
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