Gillespite
Miletich R, Allan D R, Angel R J
American Mineralogist 82 (1997) 697-707
The synthetic Cr2+ silicates BaCrSi4O10 and SrCrSi4O10: The missing links in
the gillespite-type ABSi4O10 series
CaCrSi4O10
_database_code_amcsd 0001913
7.3772 7.3772 15.1231 90 90 90 *P4/ncc
.25 -.25 0
atom      x      y      z B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Ca      .25    .75      0 .00517 .00517 .00246       0       0       0
Cr      .25    .25 .07914 .00392 .00392 .00276       0       0       0
Si   .50303 .92233 .14768 .00430 .00423 .00248 -.00005 -.00001 -.00018
O1   .45734 .95734    .25 .01147 .01147 .00248 -.00089  .00078 -.00078
O2   .70527 .99877 .12658 .00387 .00863 .00364 -.00095  .00016 -.00058
O3   .35742 .00147 .08218 .00494 .00482 .00336  .00059 -.00012  .00050