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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=20200 Help
TitleThe refinement of the crystal structure of the dioptase V Cu6 (Si6 O18) (H2 O)6 by the X-ray and neutron diffraction methods.
AuthorsBelov, N.V.;Maksimov, B.A.;Nozik, Yu.Z.;Muradyan, L.A.
ReferenceIC&volume=239&fpage=842&details=yes target=icsd_help>Doklady Akademii Nauk SSSR (1978) 239, 842-845
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CompoundH2 Cu1 O4 Si1 - [Dioptase] Copper catena-silicate hydrate [ABX4] [hR48] [f6] []
Cell14.569(2), 14.569(2), 7.779(2), 90., 90., 120.
R3-H (148) V=1429.93
RemarksR=0.052000 : P =33-487 : M =Dioptase :
PDF 33-487, R(anisotropic)=0.0398

Atom (site) Oxid. x, y, z, B, Occupancy
Cu1(18f)2
Si1(18f)4
O1(18f)-2
O2(18f)-2
O3(18f)-2
O4(18f)-2
H1(18f)1
0.260.330.390.391
0.170.210.040.281
0.180.100.080.311
0.350.380.600.231
0.150.260.210.231
0.140.180.571.191
02.

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