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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=79738
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Title
A new anhydrous amphibole from the Hoskins mine, Grenfell, New South Wales, Australia: description and crystal structure of ungaretiite, Na Na2 (Mn(2+)2 Mn(3+)3) Si8 O22 O2.
Authors
Hawthorne, F.C.;Oberti, R.;Cannillo, E.;Sardone, N.;Zanetti, A.;Grice, J.D.;Ashley, P.M.
Reference
IC&volume=80&fpage=165&details=yes target=icsd_help>American Mineralogist (1995)
80
, 165-172
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Compound
H0.2 Ca0.03 K0.15 Mg0.29 Mn4.71 Na2.77 O24 Si8
-
[Ungarettiite]
Sodium potassium calcium magnesium manganese manganese(III) catena-silicate oxide *
[
A2B3C3D8X24
] [
mS80
] [
j7 i3 h2 g2 a
] [
]
Cell
9.893(3), 18.0410(70), 5.295(3), 90., 105.10(3), 90.
C12/M1 (12)
V=912.42
Remarks
R=0.014000 : M =Ungarettiite : =Mn : P =47-1867 : D
Calculated density unusual but tolerable.
PDF 47-1867, sample U2, mean T-O: 1.619, 1.632, mean M-O: 2.039
Atom (site) Oxid.
x, y, z, B, Occupancy
O1
(8j)
-2
O2
(8j)
-2
O3
(4i)
-2
O4
(8j)
-2
O5
(8j)
-2
O6
(8j)
-2
O7
(4i)
-2
Si1
(8j)
4
Si2
(8j)
4
Mn1
(4h)
3
Mn2
(4h)
2
Mn3
(4g)
2
Mg1
(4g)
2
Mn4
(2a)
3
Mg2
(2a)
2
Na1
(4h)
1
Ca1
(4h)
2
Na2
(4i)
1
K1
(4i)
1
Na3
(4g)
1
H1
(4i)
1
0.12
0.08
0.20
0
1
0.11
0.15
0.70
0
1
0.09
0
0.71
0
1
0.34
0.24
0.79
0
1
0.35
0.12
0.07
0
1
0.34
0.11
0.57
0
1
0.35
0
0.29
0
1
0.28
0.08
0.28
0
1
0.28
0.16
0.78
0
1
0
0.08
0.5
0
0.95
0
0.08
0.5
0
0.05
0
0.18
0
0
0.89
0
0.18
0
0
0.11
0
0
0
0
0.93
0
0
0
0
0.07
0
0.27
0.5
0
0.98
0
0.27
0.5
0
0.01
0.03
0.5
0.07
0
0.2
0.03
0.5
0.07
0
0.07
0
0.48
0
0
0.2
0
0.1
Atom (site) Oxid.
Beta11, Beta22, Beta33, Beta12, Beta13, Beta23
O1
(8j)
-2
O2
(8j)
-2
O3
(4i)
-2
O4
(8j)
-2
O5
(8j)
-2
O6
(8j)
-2
O7
(4i)
-2
Si1
(8j)
4
Si2
(8j)
4
Mn1
(4h)
3
Mn2
(4h)
2
Mn3
(4g)
2
Mg1
(4g)
2
Mn4
(2a)
3
Mg2
(2a)
2
Na1
(4h)
1
Ca1
(4h)
2
Na2
(4i)
1
K1
(4i)
1
Na3
(4g)
1
H1
(4i)
1
0.00
0.00
0.00
0
0.00
0
0.00
0.00
0.00
-.00
0.00
-.00
0.00
0.00
0.00
0
0.00
0
0.00
0.00
0.00
-.00
0.00
0.00
0.00
0.00
0.00
0
0.00
0.00
0.00
0.00
0.00
0
0.00
-.00
0.00
0.00
0.01
0
0.00
0
0.00
0.00
0.00
-.00
0.00
0
0.00
0.00
0.00
-.00
0.00
0
0.00
0.00
0.00
0
0.00
0
0.00
0.00
0.00
0
0.00
0
0.00
0.00
0.00
0
0.00
0
0.00
0.00
0.00
0
0.00
0
0.00
0.00
0.00
0
0.00
0
0.00
0.00
0.00
0
0.00
0
0.00
0.00
0.01
0
0.00
0
0.00
0.00
0.01
0
0.00
0
0.00
0.00
0.03
0
0.01
0
0.00
0.00
0.03
0
0.01
0
0.00
0.00
0.04
0
0.01
0
0
0
0
0
0
0
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