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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=75613 Help
TitleCrystal structure refinements and compositional control of Mn-Mg-Ca ardennites from the Belgian Ardennes, Greece and the Western Alps.
AuthorsPasero, M.;Reinecke, T.;Fransolet, A.-M.
ReferenceNeues Jahrbuch fuer Mineralogie. Abhandl (1994) 166, 137-167
Link XRef SCOPUS Google
CompoundH6.1 Al4.4 As0.8 Ca1 Fe0.3 Mg0.9 Mn3.4 O28 Si5.2 - [Ardennite] Manganese calcium aluminium iron(III) magnesium manganese(III) silicate trisilicate arseno(V)silicate hydrate * [AB2C2D2X28] [oP100] [g2 f3 e12 d c b a] []
Cell8.767(3), 5.846(2), 18.6130(60), 90., 90., 90.
PNMMZ (59) V=953.95
RemarksR=0.069000 : M =Mn : P =41-1391 : =Ardennite :

Atom (site) Oxid. x, y, z, B, Occupancy
Mn1(4e)2
Mn2(4e)2
Ca1(4e)2
Al1(4c)3
Fe1(4c)3
Al2(4d)3
Mg1(4f)2
Al3(4f)3
Mn3(4f)3
Si1(4e)4
Si2(4e)4
Si3(2a)4
Si4(2b)4
As1(2b)5
O1(8g)-2
O2(8g)-2
O3(4e)-2
O4(4e)-2
O5(4f)-2
O6(4f)-2
O7(4e)-2
O8(4e)-2
O9(4e)-2
O10(4e)-2
O11(4e)-2
O12(4e)-2
H1(8g)1
0.940.250.150.011
0.390.750.150.010.5
0.390.750.150.010.5
0000.000.85
0000.000.15
0.5000.001
0.68-.000.250.000.45
0.68-.000.250.000.35
0.68-.000.250.000.2
0.760.750.090.001
0.270.250.090.001
0.340.250.250.011
0.040.750.250.000.2
0.040.750.250.000.8
0.130.02-.080.011
0.62-.02-.080.001
0.110.250.050.011
0.610.750.040.001
0.92-.010.250.011
0.440.010.250.001
0.680.750.170.011
0.220.250.180.001
0.150.750.170.011
0.110.750.030.001
0.610.250.030.001
0.690.250.180.011
01.52

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