Table 6.  Atomic coordinates (Å x 104) and equivalent isotropic U(eq) and anisotropic displacement parameters (Å2 x 103)
for 120853 n.5. U(eq) is defined as one third of the trace of the orthogonalized Uij tensor.
The anisotropic displacement factor exponent takes the form:  -2 pi^2 0...0 


            x             y             z        U(eq)      U11        U22        U33        U23        U13        U12 


O(11)     3631(1)       3392(1)       1203(2)     7(1)      5(1)       8(1)       8(1)       0(1)       1(1)       0(1) 
O(12)     3613(1)       1780(1)       6488(2)     7(1)      5(1)       8(1)       7(1)       0(1)       1(1)       0(1) 
O(21)     6149(1)       5099(1)       3090(2)     9(1)     10(1)       6(1)       9(1)      -1(1)       2(1)      -2(1) 
O(22)     6061(1)       9982(1)       8052(2)    10(1)     11(1)       7(1)      11(1)       1(1)       3(1)       2(1) 
O(31)     6066(1)       2668(1)         40(2)     7(1)      6(1)       9(1)       7(1)      -2(1)       2(1)       0(1) 
O(32)     5976(1)       2403(1)       4970(2)     8(1)      7(1)       9(1)       7(1)       2(1)       2(1)       0(1) 
Si(1)     5392(1)       3479(1)       2265(1)     5(1)      4(1)       5(1)       6(1)       0(1)       1(1)       0(1) 
Si(2)     5372(1)       1628(1)       7305(1)     5(1)      4(1)       5(1)       6(1)       0(1)       1(1)       0(1) 
M11       2500          3477(1)       7500        6(1)      5(1)       5(1)       7(1)       0          1(1)       0 
M1        2500          1597(1)       2500        7(1)      6(1)       7(1)       7(1)       0          1(1)       0 
M2        2500          5520(1)       2500       10(1)     11(1)       8(1)       8(1)       0          0(1)       0 
M21       2500          9506(1)       7500       10(1)     13(1)       6(1)       9(1)       0         -2(1)       0