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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=200324
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Title
Hematolite. A complex dense-packed sheet structure.
Authors
Moore, P.B.;Araki, T.
Reference
IC&volume=63&fpage=150&details=yes target=icsd_help>American Mineralogist (1978)
63
, 150-159
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Compound
H23 Al1.89 As3 Fe0.19 Mg2.53 Mn10.39 O34
-
[Hematolite]
Magnesium manganese aluminium iron arsenate hydroxide *
[
AB2C4D11X34
] [
hR75
] [
b14 a10
] [
]
Cell
8.275(5), 8.275(5), 36.600(50), 90., 90., 120.
R3H (146)
V=2170.44
Remarks
R=0.090000 : M =Hematolite : =As : P =6-563 :
Calculated density unusual but tolerable.
Deviation of the charge sum from zero tolerable.
PDF 6-563, stacking sequence of dense packing: hhhch
Atom (site) Oxid.
x, y, z, B, Occupancy
Mn1
(3a)
2
Mn2
(3a)
2
Mn3
(9b)
2
Mn4
(9b)
2
Mg1
(9b)
2
Al1
(9b)
3
Mn5
(9b)
2
Mn6
(9b)
2
Mg2
(9b)
2
Al2
(3a)
3
Fe1
(3a)
3
Mn7
(3a)
2
As1
(3a)
5
O1
(3a)
-2
O2
(9b)
-2
As2
(3a)
3
O3
(9b)
-2
As3
(3a)
5
O4
(3a)
-2
O5
(9b)
-2
O6
(3a)
-2
O7
(3a)
-2
O8
(9b)
-2
O9
(9b)
-2
O10
(9b)
-2
O11
(9b)
-2
O12
(9b)
-2
O13
(9b)
-2
O14
(9b)
-2
H1
(9b)
1
0
0
0
1.64
1
0.66
0.33
0.21
1.78
1
0.31
0.42
0.07
1.65
1
0.41
0.11
0.14
1.64
1
0.09
0.47
0.27
1.87
0.4
0.09
0.47
0.27
1.87
0.44
0.09
0.47
0.27
1.87
0.16
0.25
0.19
0.27
1.49
0.56
0.25
0.19
0.27
1.49
0.44
0
0
0.08
1.46
0.58
0
0
0.08
1.46
0.19
0
0
0.08
1.46
0.23
0
0
0.19
1.36
1
0
0
0.24
1.24
1
0.05
0.21
0.17
1.85
1
0.33
0.66
0.13
1.38
1
0.13
0.49
0.11
1.43
1
0.66
0.33
0.06
1.59
1
0.66
0.33
0.10
0.71
1
0.60
0.11
0.04
3.06
1
0.33
0.66
0.04
1.21
1.
0.33
0.66
0.30
2.41
1.
0.05
0.21
0.04
1.77
1.
0.22
0.17
0.10
1.58
1.
0.63
0.11
0.17
1.84
1.
0.28
0.43
0.24
2.27
1
0.41
0.12
0.24
1.97
1.
0.05
0.24
0.30
1.80
1.
0.59
0.06
0.30
2.20
1.
0
7.66
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