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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=81357 Help
TitleMedenbachite, Bi2 Fe (Cu, Fe) (O, OH)2 (O H)2 (As O4)2, a new mineral species: its description and crystal structure.
AuthorsKrause, W.;Bernhardt, H.-J.;Gebert, W.;Graetsch, H.;Belendorff, K.;Petitjean, K.
ReferenceIC&volume=81&fpage=505&details=yes target=icsd_help>American Mineralogist (1996) 81, 505-512
Link XRef SCOPUS Google
CompoundH3 As2 Bi2 Cu0.88 Fe1.12 O12 - [Medenbachite] Bismuth iron(III) iron copper oxide hydroxide arsenate(V) * [ABC2D2X12] [aP21] [i9 c a] []
Cell4.581(1), 6.178(1), 8.969(2), 94.29(2), 99.93(2), 94.85(3)
P1- (2) V=248.1
RemarksR=0.079000 : D M =Medenbachite : =Fe : P =49-1823 :
The coordinates are those given in the paper but the atomic distances do not agree with those calculated during testing.The coordinates are probably correct.
Cell of 2nd sample with 0.65 Cu: 4.570, 6.162, 8.993, 94.56, 99
Also refinement with unsplit Bi in .2077, .3114, .3917, U.048,

Atom (site) Oxid. x, y, z, B, Occupancy
Bi1(2i)3
Bi2(2i)3
Fe1(1a)3
Fe2(1c)2
Cu1(1c)2
As1(2i)5
O1(2i)-2
O2(2i)-2
O3(2i)-2
O4(2i)-2
O5(2i)-2
O6(2i)-2
H1(2i)1
0.150.290.3900.5
0.250.320.3800.5
00001
00.5000.12
00.5000.88
0.540.790.2101
0.310.560.1901
0.140.740.8901.
0.330.010.1801
0.240.220.9101
0.270.610.5401
0.240.130.6101
01.5
Atom (site) Oxid. U11, U22, U33, U12, U13, U23
Bi1(2i)3
Bi2(2i)3
Fe1(1a)3
Fe2(1c)2
Cu1(1c)2
As1(2i)5
O1(2i)-2
O2(2i)-2
O3(2i)-2
O4(2i)-2
O5(2i)-2
O6(2i)-2
H1(2i)1
0.020.020.020.00-.000.00
0.010.020.020.00-.000.00
0.010.020.020.000.000.00
0.020.010.020.000.000.01
0.020.010.020.000.000.01
0.020.020.020.000.000.00
0.020.010.03-.000.000.01
0.000.020.03-.00-.000.01
0.020.010.030.00-.000.00
0.010.020.030.000.000.00
0.010.030.04-.00-.00-.00
0.030.030.020.00-.000.00
000000

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