Gillespite
Hazen R M, Burnham C W
American Mineralogist 60 (1975) 937-938
The Crystal Structure of Gillespite II at 26 Kilobars: Correction and Addendum
7.349 7.515 7.894 90 90 90 P2_12_12
atom    x    y     z Biso
Ba      0    0 -.017 1.64
Fe      0 .500  .159  1.6
SiA  .689 .224  .322  1.0
SiB  .261 .188  .297  1.4
O1   .208 .267  .479   .6
O2A  .474 .221  .255  1.4
O2B  .236 .978  .285  4.2
O3A  .232 .625  .207   .4
O3B  .143 .282  .148   .4