Structure Type 079: Ca2(Al,Fe)Al2Si3O13H (Epidote)
(Si blue, O red, Al green, Ca yellow, Fe dark blue)
Spacegroup Symbol: |
P 21/m |
Origin Offset: |
(none) |
Lattice Type: |
P |
Unit Cell Parameters |
|||||
a [A] |
b [A] |
c [A] |
alpha [deg] |
beta [deg] |
gamma [deg] |
8.9140 |
5.6400 |
10.1620 |
90.000 |
115.400 |
90.000 |
Fractional Coordinates of Atoms in the Asymmetric Unit |
||||
Site Label |
Element |
x |
y |
z |
M(1) |
Al |
0.0000 |
0.0000 |
0.0000 |
M(2) |
Al |
0.0000 |
0.0000 |
0.5000 |
A(1) |
Ca |
0.7562 |
0.7500 |
0.1510 |
A(2) |
Ca |
0.6042 |
0.7500 |
0.4241 |
M(3) |
Fe |
0.2946 |
0.2500 |
0.2245 |
O(1) |
O |
0.2339 |
0.9923 |
0.0410 |
O(10) |
O |
0.0838 |
0.2500 |
0.4298 |
O(2) |
O |
0.3040 |
0.9809 |
0.3554 |
O(3) |
O |
0.7957 |
0.0152 |
0.3382 |
O(4) |
O |
0.0528 |
0.2500 |
0.1294 |
O(5) |
O |
0.0417 |
0.7500 |
0.1471 |
O(6) |
O |
0.0683 |
0.7500 |
0.4078 |
O(7) |
O |
0.5164 |
0.7500 |
0.1825 |
O(8) |
O |
0.5281 |
0.2500 |
0.3099 |
O(9) |
O |
0.6265 |
0.2500 |
0.0990 |
Si(1) |
Si |
0.3396 |
0.7500 |
0.0473 |
Si(2) |
Si |
0.6851 |
0.2500 |
0.2744 |
Si(3) |
Si |
0.1844 |
0.7500 |
0.3189 |
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