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CC=Collection Code: [AB2X4]=ANX Form: [cF56]=Pearson: [e d a]=Wyckoff Symbol: [Al2MgO4]=Structure Type:
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Title
Crystal Structure of Larsenite Pb Zn Si O4.
Authors
Prewitt, C.T.;Kirchner, E.;Preisinger, A.
Reference
Zeitschrift fuer Kristallographie, Krist (1967)
124
, 115-130
Link
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Compound
O4 Pb1 Si1 Zn1
-
[Larsenite]
Lead zinc silicate
[
ABCX4
] [
oP56
] [
a14
] [
]
Cell
8.2441(1), 18.96259(20), 5.06(1), 90., 90., 90.
PNA21 (33)
V=791.03
Remarks
R=0.055000 : P =20-607 : M =Larsenite :
Calculated density unusual but tolerable.
PDF 20-607, with Zn in tetrahedral sites, no Olivine
Atom (site) Oxid.
x, y, z, B, Occupancy
Pb1
(4a)
2
Pb2
(4a)
2
Zn1
(4a)
2
Zn2
(4a)
2
Si1
(4a)
4
Si2
(4a)
4
O1
(4a)
-2
O2
(4a)
-2
O3
(4a)
-2
O4
(4a)
-2
O5
(4a)
-2
O6
(4a)
-2
O7
(4a)
-2
O8
(4a)
-2
0.03
0.27
0.25
0
1
0.14
0.05
0.27
0
1
0.82
0.15
0.71
0
1
0.50
0.05
0.72
0
1
0.20
0.17
0.72
0
1
0.73
0.07
0.21
0
1
0.22
0.25
0.59
1.4(
1
0.35
0.13
0.64
0.7(
1
0.03
0.14
0.58
0.8(
1
0.17
0.18
0.04
1.3(
1
0.74
0.15
0.08
0.9(
1
0.57
0.03
0.08
0.7(
1
0.88
0.02
0.14
0.8(
1
0.70
0.07
0.53
1.1(
1
Atom (site) Oxid.
Beta11, Beta22, Beta33, Beta12, Beta13, Beta23
Pb1
(4a)
2
Pb2
(4a)
2
Zn1
(4a)
2
Zn2
(4a)
2
Si1
(4a)
4
Si2
(4a)
4
O1
(4a)
-2
O2
(4a)
-2
O3
(4a)
-2
O4
(4a)
-2
O5
(4a)
-2
O6
(4a)
-2
O7
(4a)
-2
O8
(4a)
-2
0.00
0.00
0.00
0.00
-.00
-.00
0.00
0.00
0.00
0
0.00
-.00
0.00
0.00
0.00
-.00
0.00
0.00
0.00
0.00
0.00
-.00
0.00
0.00
0.00
0.00
0.00
0.00
-.00
-.00
0.00
0.00
0.00
0.00
0.00
-.00
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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