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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=83821
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Title
Subsilicic ferrian aluminian diopside from the Chelyabinsk coal basin (Southern Urals) - an unusual clinopyroxene.
Authors
Kabalov, Yu.K.;Oeckler, O.;Sokolova, E.V.;Mironov, A.B.;Chesnokov, B.V.
Reference
IC&volume=9&fpage=617&details=yes target=icsd_help>European Journal of Mineralogy (1997)
9
, 617-621
Link
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Compound
Al0.6 Ca0.96 Fe0.51 Mg0.44 O6.12 Si1.4
-
[Diopside]
Iron(III) magnesium calcium catena-ferro(III)alumosilicate *
[
ABC2X6
] [
mS40
] [
f4 e2
] [
]
Cell
9.786(2), 8.860(1), 5.338(1), 90., 105.87(1), 90.
C12/C1 (15)
V=445.19
Remarks
R=0.029000 : D M =Diopside : X
A site occupation is implausible or meaningless but agrees with the paper.
Deviation of the charge sum from zero tolerable.
Atom (site) Oxid.
x, y, z, B, Occupancy
Fe1
(4e)
3
Al1
(4e)
3
Mg1
(4e)
2
Ca1
(4e)
2
Fe2
(8f)
3
Si1
(8f)
4
Al2
(8f)
3
O1
(8f)
-2
O2
(8f)
-2
O3
(8f)
-2
0
0.09
0.75
1.0(
0.35
0
0.09
0.75
1.0(
0.20
0
0.09
0.75
1.0(
0.44
0
0.69
0.75
0.8(
0.96
0.21
0.40
0.77
1.0(
0.08
0.21
0.40
0.77
1.0(
0.70
0.21
0.40
0.77
1.0(
0.20
0.39
0.41
0.86
1.2(
1.01
0.14
0.24
0.64
0.9(
0.99
0.14
0.48
0.02
0.4(
1.06
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